diff --git a/backend/constants/action.go b/backend/constants/action.go
index 31d3655e..389a11bc 100644
--- a/backend/constants/action.go
+++ b/backend/constants/action.go
@@ -1,5 +1,8 @@
 package constants
 
 const (
-	ActionTypeVisit = "visit"
+	ActionTypeVisit          = "visit"
+	ActionTypeInstallDep     = "install_dep"
+	ActionTypeInstallLang    = "install_lang"
+	ActionTypeViewDisclaimer = "view_disclaimer"
 )
diff --git a/backend/constants/challenge.go b/backend/constants/challenge.go
index 4cfa9710..5c056e91 100644
--- a/backend/constants/challenge.go
+++ b/backend/constants/challenge.go
@@ -1,7 +1,20 @@
 package constants
 
 const (
-	ChallengeLogin7d                = "login_7d"
-	ChallengeCreateCustomizedSpider = "create_customized_spider"
-	ChallengeRunRandom              = "run_random"
+	ChallengeLogin7d                  = "login_7d"
+	ChallengeLogin30d                 = "login_30d"
+	ChallengeLogin90d                 = "login_90d"
+	ChallengeLogin180d                = "login_180d"
+	ChallengeCreateCustomizedSpider   = "create_customized_spider"
+	ChallengeCreateConfigurableSpider = "create_configurable_spider"
+	ChallengeCreateSchedule           = "create_schedule"
+	ChallengeCreateNodes              = "create_nodes"
+	ChallengeCreateUser         = "create_user"
+	ChallengeRunRandom                = "run_random"
+	ChallengeScrape1k                 = "scrape_1k"
+	ChallengeScrape10k                = "scrape_10k"
+	ChallengeScrape100k               = "scrape_100k"
+	ChallengeInstallDep               = "install_dep"
+	ChallengeInstallLang              = "install_lang"
+	ChallengeViewDisclaimer           = "view_disclaimer"
 )
diff --git a/backend/data/challenge_data.json b/backend/data/challenge_data.json
index e8cea7da..5a51dc33 100644
--- a/backend/data/challenge_data.json
+++ b/backend/data/challenge_data.json
@@ -7,22 +7,136 @@
     "description_en": "Logged-in for consecutive 7 days to complete the challenge",
     "difficulty": 1
   },
+  {
+    "name": "login_30d",
+    "title_cn": "连续登录 30 天",
+    "title_en": "Logged-in for 30 days",
+    "description_cn": "连续 30 天登录 Crawlab，即可完成挑战！",
+    "description_en": "Logged-in for consecutive 30 days to complete the challenge",
+    "difficulty": 2
+  },
+  {
+    "name": "login_90d",
+    "title_cn": "连续登录 90 天",
+    "title_en": "Logged-in for 90 days",
+    "description_cn": "连续 90 天登录 Crawlab，即可完成挑战！",
+    "description_en": "Logged-in for consecutive 90 days to complete the challenge",
+    "difficulty": 3
+  },
+  {
+    "name": "login_180d",
+    "title_cn": "连续登录 180 天",
+    "title_en": "Logged-in for 180 days",
+    "description_cn": "连续 180 天登录 Crawlab，即可完成挑战！",
+    "description_en": "Logged-in for consecutive 180 days to complete the challenge",
+    "difficulty": 4
+  },
   {
     "name": "create_customized_spider",
-    "title_cn": "创建一个自定义爬虫",
+    "title_cn": "创建 1 个自定义爬虫",
     "title_en": "Create a customized spider",
     "description_cn": "在爬虫列表中，点击 '添加爬虫'，选择 '自定义爬虫'，输入相应的参数，点击添加，即可完成挑战！",
     "description_en": "In Spider List page, click 'Add Spider', select 'Customized Spider', enter params, click 'Add' to finish the challenge.",
     "difficulty": 1,
     "path": "/spiders"
   },
+  {
+    "name": "create_configurable_spider",
+    "title_cn": "创建 1 个可配置爬虫",
+    "title_en": "Create a configurable spider",
+    "description_cn": "在爬虫列表中，点击 '添加爬虫'，选择 '可配置爬虫'，输入相应的参数，点击添加，即可完成挑战！",
+    "description_en": "In Spider List page, click 'Add Spider', select 'Configurable Spider', enter params, click 'Add' to finish the challenge.",
+    "difficulty": 1,
+    "path": "/spiders"
+  },
   {
     "name": "run_random",
-    "title_cn": "用随机模式运行一个爬虫",
-    "title_en": "Run a spider in random mode",
-    "description_cn": "在您创建好的爬虫中，导航到其对应的详情页（爬虫列表中点击爬虫），运行一个爬虫，选择随机模式。",
-    "description_en": "In your created spiders, navigate to corresponding detail page (click spider in Spider List page), run a spider in random mode.",
+    "title_cn": "用随机模式成功运行爬虫",
+    "title_en": "Run a spider in random mode successfully",
+    "description_cn": "在您创建好的爬虫中，导航到其对应的详情页（爬虫列表中点击爬虫），选择随机模式运行一个爬虫，并能运行成功。",
+    "description_en": "In your created spiders, navigate to corresponding detail page (click spider in Spider List page), run a spider in random mode successfully.",
+    "difficulty": 1,
+    "path": "/spiders"
+  },
+  {
+    "name": "scrape_1k",
+    "title_cn": "抓取 1 千条数据",
+    "title_en": "Scrape 1k records",
+    "description_cn": "运行您创建好的爬虫，抓取 1 千条及以上的结果数据，即可完成挑战！",
+    "description_en": "Run your created spiders, scrape 1k and more results to finish the challenge.",
     "difficulty": 2,
     "path": "/spiders"
+  },
+  {
+    "name": "scrape_10k",
+    "title_cn": "抓取 1 万条数据",
+    "title_en": "Scrape 10k records",
+    "description_cn": "运行您创建好的爬虫，抓取 1 万条及以上的结果数据，即可完成挑战！",
+    "description_en": "Run your created spiders, scrape 10k and more results to finish the challenge.",
+    "difficulty": 3,
+    "path": "/spiders"
+  },
+  {
+    "name": "scrape_100k",
+    "title_cn": "抓取 10 万条数据",
+    "title_en": "Scrape 100k records",
+    "description_cn": "运行您创建好的爬虫，抓取 10 万条及以上的结果数据，即可完成挑战！",
+    "description_en": "Run your created spiders, scrape 100k and more results to finish the challenge.",
+    "difficulty": 4,
+    "path": "/spiders"
+  },
+  {
+    "name": "create_schedule",
+    "title_cn": "创建 1 个定时任务",
+    "title_en": "Create a schedule",
+    "description_cn": "在定时任务列表中，创建一个定时任务，正确设置好 Cron 表达式，即可完成挑战！",
+    "description_en": "In Schedule List page, create a schedule and configure cron expression to finish the task.",
+    "difficulty": 1,
+    "path": "/schedules"
+  },
+  {
+    "name": "create_nodes",
+    "title_cn": "创建 1 个节点集群",
+    "title_en": "Create a node cluster",
+    "description_cn": "按照文档的部署指南，部署含有 3 个节点的集群，即可完成挑战！",
+    "description_en": "Deploy a 3-node cluster according to the deployment guidance in documentation to finish the task.",
+    "difficulty": 3,
+    "path": "/nodes"
+  },
+  {
+    "name": "install_dep",
+    "title_cn": "安装 1 个依赖",
+    "title_en": "Install a dependency successfully",
+    "description_cn": "在 '节点列表->安装' 或 '节点详情->安装' 中，搜索并安装所需的 1 个依赖，即可完成挑战！",
+    "description_en": "In 'Node List -> Installation' or 'Node Detail -> Installation', search and install a dependency.",
+    "difficulty": 3,
+    "path": "/nodes"
+  },
+  {
+    "name": "install_lang",
+    "title_cn": "安装 1 个语言环境",
+    "title_en": "Install a language successfully",
+    "description_cn": "在 '节点列表->安装' 或 '节点详情->安装' 中，点击安装所需的 1 个语言环境，即可完成挑战！",
+    "description_en": "In 'Node List -> Installation' or 'Node Detail -> Installation', install a language.",
+    "difficulty": 3,
+    "path": "/nodes"
+  },
+  {
+    "name": "view_disclaimer",
+    "title_cn": "阅读免责声明",
+    "title_en": "View disclaimer",
+    "description_cn": "在左侧菜单栏，点击 '免责声明' 查看其内容，即可完成挑战！",
+    "description_en": "In the left side menu, click 'Disclaimer' and view its content to finish the challenge.",
+    "difficulty": 1,
+    "path": "/disclaimer"
+  },
+  {
+    "name": "create_user",
+    "title_cn": "创建 1 个用户",
+    "title_en": "Create a user",
+    "description_cn": "在用户管理页面中创建一个新用户，即可完成挑战！",
+    "description_en": "In User Admin page, create a new user to finish the challenge.",
+    "difficulty": 1,
+    "path": "/users"
   }
 ]
\ No newline at end of file
diff --git a/backend/main.go b/backend/main.go
index 6550bbbd..ac76a453 100644
--- a/backend/main.go
+++ b/backend/main.go
@@ -240,6 +240,7 @@ func main() {
 				authGroup.GET("/users/:id", routes.GetUser)       // 用户详情
 				authGroup.POST("/users/:id", routes.PostUser)     // 更改用户
 				authGroup.DELETE("/users/:id", routes.DeleteUser) // 删除用户
+				authGroup.PUT("/users-add", routes.PutUser)       // 添加用户
 				authGroup.GET("/me", routes.GetMe)                // 获取自己账户
 				authGroup.POST("/me", routes.PostMe)              // 修改自己账户
 			}
diff --git a/backend/model/challenge.go b/backend/model/challenge.go
index 083d216b..09f4db89 100644
--- a/backend/model/challenge.go
+++ b/backend/model/challenge.go
@@ -32,7 +32,7 @@ func (ch *Challenge) Save() error {
 
 	ch.UpdateTs = time.Now()
 
-	if err := c.UpdateId(ch.Id, c); err != nil {
+	if err := c.UpdateId(ch.Id, ch); err != nil {
 		debug.PrintStack()
 		return err
 	}
diff --git a/backend/model/task.go b/backend/model/task.go
index 6b2a44c1..1793d0b8 100644
--- a/backend/model/task.go
+++ b/backend/model/task.go
@@ -26,7 +26,7 @@ type Task struct {
 	TotalDuration   float64       `json:"total_duration" bson:"total_duration"`
 	Pid             int           `json:"pid" bson:"pid"`
 	RunType         string        `json:"run_type" bson:"run_type"`
-	ScheduleId      bson.ObjectId `json:"schedule_id" bson:"schedule_id"`
+	//ScheduleId      bson.ObjectId `json:"schedule_id" bson:"schedule_id"`
 
 	// 前端数据
 	SpiderName string `json:"spider_name"`
diff --git a/backend/model/user.go b/backend/model/user.go
index 9dadec0f..074a197a 100644
--- a/backend/model/user.go
+++ b/backend/model/user.go
@@ -19,8 +19,9 @@ type User struct {
 	Email    string        `json:"email" bson:"email"`
 	Setting  UserSetting   `json:"setting" bson:"setting"`
 
-	CreateTs time.Time `json:"create_ts" bson:"create_ts"`
-	UpdateTs time.Time `json:"update_ts" bson:"update_ts"`
+	UserId   bson.ObjectId `json:"user_id" bson:"user_id"`
+	CreateTs time.Time     `json:"create_ts" bson:"create_ts"`
+	UpdateTs time.Time     `json:"update_ts" bson:"update_ts"`
 }
 
 type UserSetting struct {
diff --git a/backend/routes/user.go b/backend/routes/user.go
index fcca967e..86d46a61 100644
--- a/backend/routes/user.go
+++ b/backend/routes/user.go
@@ -95,8 +95,11 @@ func PutUser(c *gin.Context) {
 		reqData.Role = constants.RoleNormal
 	}
 
+	// UserId
+	uid := services.GetCurrentUserId(c)
+
 	// 添加用户
-	if err := services.CreateNewUser(reqData.Username, reqData.Password, reqData.Role, reqData.Email); err != nil {
+	if err := services.CreateNewUser(reqData.Username, reqData.Password, reqData.Role, reqData.Email, uid); err != nil {
 		HandleError(http.StatusInternalServerError, c, err)
 		return
 	}
@@ -120,6 +123,10 @@ func PostUser(c *gin.Context) {
 		return
 	}
 
+	if item.UserId.Hex() == "" {
+		item.UserId = bson.ObjectIdHex(constants.ObjectIdNull)
+	}
+
 	if err := model.UpdateUser(bson.ObjectIdHex(id), item); err != nil {
 		HandleError(http.StatusInternalServerError, c, err)
 		return
@@ -230,6 +237,11 @@ func PostMe(c *gin.Context) {
 		user.Setting.WechatRobotWebhook = reqBody.Setting.WechatRobotWebhook
 	}
 	user.Setting.EnabledNotifications = reqBody.Setting.EnabledNotifications
+
+	if user.UserId.Hex() == "" {
+		user.UserId = bson.ObjectIdHex(constants.ObjectIdNull)
+	}
+
 	if err := user.Save(); err != nil {
 		HandleError(http.StatusInternalServerError, c, err)
 		return
diff --git a/backend/services/challenge/base.go b/backend/services/challenge/base.go
index 9515ff9e..a7758708 100644
--- a/backend/services/challenge/base.go
+++ b/backend/services/challenge/base.go
@@ -19,10 +19,36 @@ func GetService(name string, uid bson.ObjectId) Service {
 	switch name {
 	case constants.ChallengeLogin7d:
 		return &Login7dService{UserId: uid}
+	case constants.ChallengeLogin30d:
+		return &Login30dService{UserId: uid}
+	case constants.ChallengeLogin90d:
+		return &Login90dService{UserId: uid}
+	case constants.ChallengeLogin180d:
+		return &Login180dService{UserId: uid}
 	case constants.ChallengeCreateCustomizedSpider:
 		return &CreateCustomizedSpiderService{UserId: uid}
+	case constants.ChallengeCreateConfigurableSpider:
+		return &CreateConfigurableSpiderService{UserId: uid}
+	case constants.ChallengeCreateSchedule:
+		return &CreateScheduleService{UserId: uid}
+	case constants.ChallengeCreateNodes:
+		return &CreateNodesService{UserId: uid}
 	case constants.ChallengeRunRandom:
 		return &RunRandomService{UserId: uid}
+	case constants.ChallengeScrape1k:
+		return &Scrape1kService{UserId: uid}
+	case constants.ChallengeScrape10k:
+		return &Scrape10kService{UserId: uid}
+	case constants.ChallengeScrape100k:
+		return &Scrape100kService{UserId: uid}
+	case constants.ChallengeInstallDep:
+		return &InstallDepService{UserId: uid}
+	case constants.ChallengeInstallLang:
+		return &InstallLangService{UserId: uid}
+	case constants.ChallengeViewDisclaimer:
+		return &ViewDisclaimerService{UserId: uid}
+	case constants.ChallengeCreateUser:
+		return &CreateUserService{UserId: uid}
 	}
 	return nil
 }
@@ -98,6 +124,8 @@ func InitChallengeService() error {
 				continue
 			}
 		} else {
+			ch.Id = chDb.Id
+			ch.CreateTs = chDb.CreateTs
 			if err := ch.Save(); err != nil {
 				log.Errorf(err.Error())
 				debug.PrintStack()
diff --git a/backend/services/challenge/create_configurable_spider.go b/backend/services/challenge/create_configurable_spider.go
new file mode 100644
index 00000000..45e969f7
--- /dev/null
+++ b/backend/services/challenge/create_configurable_spider.go
@@ -0,0 +1,23 @@
+package challenge
+
+import (
+	"crawlab/constants"
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type CreateConfigurableSpiderService struct {
+	UserId bson.ObjectId
+}
+
+func (s *CreateConfigurableSpiderService) Check() (bool, error) {
+	query := bson.M{
+		"user_id": s.UserId,
+		"type": constants.Configurable,
+	}
+	_, count, err := model.GetSpiderList(query, 0, 1, "-_id")
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
diff --git a/backend/services/challenge/create_nodes.go b/backend/services/challenge/create_nodes.go
new file mode 100644
index 00000000..42ec25f7
--- /dev/null
+++ b/backend/services/challenge/create_nodes.go
@@ -0,0 +1,22 @@
+package challenge
+
+import (
+	"crawlab/constants"
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type CreateNodesService struct {
+	UserId bson.ObjectId
+}
+
+func (s *CreateNodesService) Check() (bool, error) {
+	query := bson.M{
+		"status": constants.StatusOnline,
+	}
+	list, err := model.GetScheduleList(query)
+	if err != nil {
+		return false, err
+	}
+	return len(list) >= 3, nil
+}
diff --git a/backend/services/challenge/create_schedule.go b/backend/services/challenge/create_schedule.go
new file mode 100644
index 00000000..3e0ce0e1
--- /dev/null
+++ b/backend/services/challenge/create_schedule.go
@@ -0,0 +1,21 @@
+package challenge
+
+import (
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type CreateScheduleService struct {
+	UserId bson.ObjectId
+}
+
+func (s *CreateScheduleService) Check() (bool, error) {
+	query := bson.M{
+		"user_id": s.UserId,
+	}
+	list, err := model.GetScheduleList(query)
+	if err != nil {
+		return false, err
+	}
+	return len(list) > 0, nil
+}
diff --git a/backend/services/challenge/create_user.go b/backend/services/challenge/create_user.go
new file mode 100644
index 00000000..e0272801
--- /dev/null
+++ b/backend/services/challenge/create_user.go
@@ -0,0 +1,21 @@
+package challenge
+
+import (
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type CreateUserService struct {
+	UserId bson.ObjectId
+}
+
+func (s *CreateUserService) Check() (bool, error) {
+	query := bson.M{
+		"user_id": s.UserId,
+	}
+	list, err := model.GetUserList(query, 0, 1, "-_id")
+	if err != nil {
+		return false, err
+	}
+	return len(list) > 0, nil
+}
diff --git a/backend/services/challenge/install_dep.go b/backend/services/challenge/install_dep.go
new file mode 100644
index 00000000..4730249e
--- /dev/null
+++ b/backend/services/challenge/install_dep.go
@@ -0,0 +1,23 @@
+package challenge
+
+import (
+	"crawlab/constants"
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type InstallDepService struct {
+	UserId bson.ObjectId
+}
+
+func (s *InstallDepService) Check() (bool, error) {
+	query := bson.M{
+		"user_id": s.UserId,
+		"type": constants.ActionTypeInstallDep,
+	}
+	list, err := model.GetActionList(query, 0, 1, "-_id")
+	if err != nil {
+		return false, err
+	}
+	return len(list) > 0, nil
+}
diff --git a/backend/services/challenge/install_lang.go b/backend/services/challenge/install_lang.go
new file mode 100644
index 00000000..15732a2f
--- /dev/null
+++ b/backend/services/challenge/install_lang.go
@@ -0,0 +1,23 @@
+package challenge
+
+import (
+	"crawlab/constants"
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type InstallLangService struct {
+	UserId bson.ObjectId
+}
+
+func (s *InstallLangService) Check() (bool, error) {
+	query := bson.M{
+		"user_id": s.UserId,
+		"type": constants.ActionTypeInstallLang,
+	}
+	list, err := model.GetActionList(query, 0, 1, "-_id")
+	if err != nil {
+		return false, err
+	}
+	return len(list) > 0, nil
+}
diff --git a/backend/services/challenge/login_180d.go b/backend/services/challenge/login_180d.go
new file mode 100644
index 00000000..96cc9e26
--- /dev/null
+++ b/backend/services/challenge/login_180d.go
@@ -0,0 +1,18 @@
+package challenge
+
+import (
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type Login180dService struct {
+	UserId bson.ObjectId
+}
+
+func (s *Login180dService) Check() (bool, error) {
+	days, err := model.GetVisitDays(s.UserId)
+	if err != nil {
+		return false, err
+	}
+	return days >= 180, nil
+}
diff --git a/backend/services/challenge/login_30d.go b/backend/services/challenge/login_30d.go
new file mode 100644
index 00000000..5234d5fe
--- /dev/null
+++ b/backend/services/challenge/login_30d.go
@@ -0,0 +1,18 @@
+package challenge
+
+import (
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type Login30dService struct {
+	UserId bson.ObjectId
+}
+
+func (s *Login30dService) Check() (bool, error) {
+	days, err := model.GetVisitDays(s.UserId)
+	if err != nil {
+		return false, err
+	}
+	return days >= 30, nil
+}
diff --git a/backend/services/challenge/login_90d.go b/backend/services/challenge/login_90d.go
new file mode 100644
index 00000000..a8526b87
--- /dev/null
+++ b/backend/services/challenge/login_90d.go
@@ -0,0 +1,18 @@
+package challenge
+
+import (
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type Login90dService struct {
+	UserId bson.ObjectId
+}
+
+func (s *Login90dService) Check() (bool, error) {
+	days, err := model.GetVisitDays(s.UserId)
+	if err != nil {
+		return false, err
+	}
+	return days >= 90, nil
+}
diff --git a/backend/services/challenge/run_random.go b/backend/services/challenge/run_random.go
index ebdc11fe..aad4fe21 100644
--- a/backend/services/challenge/run_random.go
+++ b/backend/services/challenge/run_random.go
@@ -14,6 +14,7 @@ func (s *RunRandomService) Check() (bool, error) {
 	query := bson.M{
 		"user_id":  s.UserId,
 		"run_type": constants.RunTypeRandom,
+		"status": constants.StatusFinished,
 	}
 	list, err := model.GetTaskList(query, 0, 1, "-_id")
 	if err != nil {
diff --git a/backend/services/challenge/scrape_100k.go b/backend/services/challenge/scrape_100k.go
new file mode 100644
index 00000000..68a90eda
--- /dev/null
+++ b/backend/services/challenge/scrape_100k.go
@@ -0,0 +1,24 @@
+package challenge
+
+import (
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type Scrape100kService struct {
+	UserId bson.ObjectId
+}
+
+func (s *Scrape100kService) Check() (bool, error) {
+	query := bson.M{
+		"user_id":  s.UserId,
+		"result_count": bson.M{
+			"$gte": 100000,
+		},
+	}
+	list, err := model.GetTaskList(query, 0, 1, "-_id")
+	if err != nil {
+		return false, err
+	}
+	return len(list) > 0, nil
+}
diff --git a/backend/services/challenge/scrape_10k.go b/backend/services/challenge/scrape_10k.go
new file mode 100644
index 00000000..ae70b450
--- /dev/null
+++ b/backend/services/challenge/scrape_10k.go
@@ -0,0 +1,24 @@
+package challenge
+
+import (
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type Scrape10kService struct {
+	UserId bson.ObjectId
+}
+
+func (s *Scrape10kService) Check() (bool, error) {
+	query := bson.M{
+		"user_id":  s.UserId,
+		"result_count": bson.M{
+			"$gte": 10000,
+		},
+	}
+	list, err := model.GetTaskList(query, 0, 1, "-_id")
+	if err != nil {
+		return false, err
+	}
+	return len(list) > 0, nil
+}
diff --git a/backend/services/challenge/scrape_1k.go b/backend/services/challenge/scrape_1k.go
new file mode 100644
index 00000000..cad2469f
--- /dev/null
+++ b/backend/services/challenge/scrape_1k.go
@@ -0,0 +1,24 @@
+package challenge
+
+import (
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type Scrape1kService struct {
+	UserId bson.ObjectId
+}
+
+func (s *Scrape1kService) Check() (bool, error) {
+	query := bson.M{
+		"user_id":  s.UserId,
+		"result_count": bson.M{
+			"$gte": 1000,
+		},
+	}
+	list, err := model.GetTaskList(query, 0, 1, "-_id")
+	if err != nil {
+		return false, err
+	}
+	return len(list) > 0, nil
+}
diff --git a/backend/services/challenge/view_disclaimer.go b/backend/services/challenge/view_disclaimer.go
new file mode 100644
index 00000000..fc9fe21c
--- /dev/null
+++ b/backend/services/challenge/view_disclaimer.go
@@ -0,0 +1,23 @@
+package challenge
+
+import (
+	"crawlab/constants"
+	"crawlab/model"
+	"github.com/globalsign/mgo/bson"
+)
+
+type ViewDisclaimerService struct {
+	UserId bson.ObjectId
+}
+
+func (s *ViewDisclaimerService) Check() (bool, error) {
+	query := bson.M{
+		"user_id": s.UserId,
+		"type": constants.ActionTypeViewDisclaimer,
+	}
+	list, err := model.GetActionList(query, 0, 1, "-_id")
+	if err != nil {
+		return false, err
+	}
+	return len(list) > 0, nil
+}
diff --git a/backend/services/user.go b/backend/services/user.go
index b01b4923..5e283044 100644
--- a/backend/services/user.go
+++ b/backend/services/user.go
@@ -14,7 +14,7 @@ import (
 )
 
 func InitUserService() error {
-	_ = CreateNewUser("admin", "admin", constants.RoleAdmin, "")
+	_ = CreateNewUser("admin", "admin", constants.RoleAdmin, "", bson.ObjectIdHex(constants.ObjectIdNull))
 	return nil
 }
 
@@ -90,12 +90,13 @@ func CheckToken(tokenStr string) (user model.User, err error) {
 	return
 }
 
-func CreateNewUser(username string, password string, role string, email string) error {
+func CreateNewUser(username string, password string, role string, email string, uid bson.ObjectId) error {
 	user := model.User{
 		Username: strings.ToLower(username),
 		Password: utils.EncryptPassword(password),
 		Role:     role,
 		Email:    email,
+		UserId:   uid,
 		Setting: model.UserSetting{
 			NotificationTrigger: constants.NotificationTriggerNever,
 			EnabledNotifications: []string{
@@ -112,11 +113,10 @@ func CreateNewUser(username string, password string, role string, email string)
 }
 
 func GetCurrentUser(c *gin.Context) *model.User {
-	data, _ := c.Get("currentUser")
+	data, _ := c.Get(constants.ContextUser)
 	return data.(*model.User)
 }
 
 func GetCurrentUserId(c *gin.Context) bson.ObjectId {
 	return GetCurrentUser(c).Id
 }
-
diff --git a/frontend/src/components/Node/NodeInstallation.vue b/frontend/src/components/Node/NodeInstallation.vue
index d5813baa..d7a29186 100644
--- a/frontend/src/components/Node/NodeInstallation.vue
+++ b/frontend/src/components/Node/NodeInstallation.vue
@@ -262,6 +262,9 @@ export default {
         })
         dep.installed = true
       }
+      this.$request.put('/actions', {
+        type: 'install_dep'
+      })
       this.$set(this.depLoadingDict, name, false)
       this.$st.sendEv('节点详情', '安装', '安装依赖')
     },
@@ -312,6 +315,9 @@ export default {
           message: this.$t('You have successfully installed a language: ') + this.activeLang.name
         })
       }
+      this.$request.put('/actions', {
+        type: 'install_lang'
+      })
       this.isLoadingInstallLang = false
       this.$st.sendEv('节点详情', '安装', '安装语言')
     },
diff --git a/frontend/src/components/Node/NodeInstallationMatrix.vue b/frontend/src/components/Node/NodeInstallationMatrix.vue
index 8c628914..adcff113 100644
--- a/frontend/src/components/Node/NodeInstallationMatrix.vue
+++ b/frontend/src/components/Node/NodeInstallationMatrix.vue
@@ -266,6 +266,7 @@ export default {
       await Promise.all(this.nodeList.map(async n => {
         if (n.status !== 'online') return
         const res = await this.$request.get(`/nodes/${n._id}/langs`)
+        if (!res.data.data) return
         res.data.data.forEach(l => {
           const key = n._id + '|' + l.executable_name
           this.$set(this.langsDataDict, key, l)
@@ -280,6 +281,7 @@ export default {
       await Promise.all(this.nodeList.map(async n => {
         if (n.status !== 'online') return
         const res = await this.$request.get(`/nodes/${n._id}/deps/installed`, { lang: this.activeLang })
+        if (!res.data.data) return
         res.data.data.forEach(d => {
           depsSet.add(d.name)
           const key = n._id + '|' + d.name
@@ -319,6 +321,9 @@ export default {
       setTimeout(() => {
         this.getLangsData()
       }, 1000)
+      this.$request.put('/actions', {
+        type: 'install_lang'
+      })
       this.$st.sendEv('节点列表', '安装', '安装语言')
     },
     async onInstallLangAll (langLabel, ev) {
@@ -372,6 +377,9 @@ export default {
         })
         this.$set(this.depsDataDict, key, 'installed')
       }
+      this.$request.put('/actions', {
+        type: 'install_dep'
+      })
       this.$st.sendEv('节点列表', '安装', '安装依赖')
     },
     async uninstallDep (node, dep) {
diff --git a/frontend/src/i18n/zh.js b/frontend/src/i18n/zh.js
index e677d90b..2695c850 100644
--- a/frontend/src/i18n/zh.js
+++ b/frontend/src/i18n/zh.js
@@ -592,6 +592,7 @@ docker run -d --restart always --name crawlab_worker \\
   'Are you sure to stop selected items?': '您是否确认停止所选项？',
   'Sent signals to cancel selected tasks': '已经向所选任务发送取消任务信号',
   'Copied successfully': '已成功复制',
+  'You have started the challenge.': '您已开始挑战',
 
   // 其他
   'Star crawlab-team/crawlab on GitHub': '在 GitHub 上为 Crawlab 加星吧'
diff --git a/frontend/src/store/modules/user.js b/frontend/src/store/modules/user.js
index 4bb6e918..0e812134 100644
--- a/frontend/src/store/modules/user.js
+++ b/frontend/src/store/modules/user.js
@@ -152,7 +152,7 @@ const user = {
 
     // 添加用户
     addUser ({ dispatch, commit, state }) {
-      return request.put('/users', state.userForm)
+      return request.put('/users-add', state.userForm)
     },
     // 新增全局变量
     addGlobalVariable ({ commit, state }) {
diff --git a/frontend/src/views/challenge/ChallengeList.vue b/frontend/src/views/challenge/ChallengeList.vue
index 3d45bd35..551c1354 100644
--- a/frontend/src/views/challenge/ChallengeList.vue
+++ b/frontend/src/views/challenge/ChallengeList.vue
@@ -49,6 +49,7 @@
               size="mini"
               type="primary"
               icon="el-icon-s-flag"
+              @click="onStartChallenge(c)"
             >
               {{$t('Start Challenge')}}
             </el-button>
@@ -80,6 +81,13 @@ export default {
       await this.$request.post('/challenges-check')
       const res = await this.$request.get('/challenges')
       this.challenges = res.data.data || []
+    },
+    onStartChallenge (c) {
+      if (c.path) {
+        this.$router.push(c.path)
+      } else {
+        this.$message.success(this.$t('You have started the challenge.'))
+      }
     }
   },
   async created () {
@@ -96,8 +104,8 @@ export default {
   }
 
   .challenge-list .challenge-item {
-    flex-basis: 240px;
-    width: 240px;
+    flex-basis: 280px;
+    width: 280px;
     margin: 10px;
   }
 
diff --git a/frontend/src/views/doc/Disclaimer.vue b/frontend/src/views/doc/Disclaimer.vue
index b05f8e96..d66c6614 100644
--- a/frontend/src/views/doc/Disclaimer.vue
+++ b/frontend/src/views/doc/Disclaimer.vue
@@ -60,6 +60,11 @@ This Disclaimer and privacy protection statement (hereinafter referred to as "di
 8. 传播:任何公司或个人在网络上发布，传播我们软件的行为都是允许的，但因公司或个人传播软件可能造成的任何法律和刑事事件 Crawlab 开发组不负任何责任。
       `
     }
+  },
+  mounted () {
+    this.$request.put('/actions', {
+      type: 'view_disclaimer'
+    })
   }
 }
 </script>