diff --git a/backend/entity/doc.go b/backend/entity/doc.go
new file mode 100644
index 00000000..b356d38a
--- /dev/null
+++ b/backend/entity/doc.go
@@ -0,0 +1,8 @@
+package entity
+
+type DocItem struct {
+	Title    string    `json:"title"`
+	Url      string    `json:"url"`
+	Path     string    `json:"path"`
+	Children []DocItem `json:"children"`
+}
diff --git a/backend/main.go b/backend/main.go
index a35291ca..ea9c30df 100644
--- a/backend/main.go
+++ b/backend/main.go
@@ -135,6 +135,8 @@ func main() {
 			// release版本
 			anonymousGroup.GET("/version", routes.GetVersion)               // 获取发布的版本
 			anonymousGroup.GET("/releases/latest", routes.GetLatestRelease) // 获取最近发布的版本
+			// 文档
+			anonymousGroup.GET("/docs", routes.GetDocs) // 获取文档数据
 		}
 		authGroup := app.Group("/", middlewares.AuthorizationMiddleware())
 		{
@@ -259,7 +261,6 @@ func main() {
 			authGroup.GET("/git/branches", routes.GetGitBranches)       // 获取 Git 分支
 			authGroup.GET("/git/public-key", routes.GetGitSshPublicKey) // 获取 SSH 公钥
 		}
-
 	}
 
 	// 路由ping
diff --git a/backend/routes/doc.go b/backend/routes/doc.go
new file mode 100644
index 00000000..6426cdcc
--- /dev/null
+++ b/backend/routes/doc.go
@@ -0,0 +1,25 @@
+package routes
+
+import (
+	"crawlab/services"
+	"github.com/apex/log"
+	"github.com/gin-gonic/gin"
+	"net/http"
+	"runtime/debug"
+)
+
+func GetDocs(c *gin.Context) {
+	type ResData struct {
+		String string `json:"string"`
+	}
+	data, err := services.GetDocs()
+	if err != nil {
+		log.Errorf(err.Error())
+		debug.PrintStack()
+	}
+	c.JSON(http.StatusOK, Response{
+		Status:  "ok",
+		Message: "success",
+		Data:    ResData{String:data},
+	})
+}
diff --git a/backend/services/doc.go b/backend/services/doc.go
new file mode 100644
index 00000000..572e5cb4
--- /dev/null
+++ b/backend/services/doc.go
@@ -0,0 +1,27 @@
+package services
+
+import (
+	"github.com/apex/log"
+	"github.com/imroc/req"
+	"runtime/debug"
+)
+
+func GetDocs() (data string, err error) {
+	// 获取远端数据
+	res, err := req.Get("https://docs.crawlab.cn/search_plus_index.json")
+	if err != nil {
+		log.Errorf(err.Error())
+		debug.PrintStack()
+		return data, err
+	}
+
+	// 反序列化
+	data, err = res.ToString()
+	if err != nil {
+		log.Errorf(err.Error())
+		debug.PrintStack()
+		return data, err
+	}
+
+	return data, nil
+}
diff --git a/frontend/.env.development b/frontend/.env.development
index ba21c0c6..275af85c 100644
--- a/frontend/.env.development
+++ b/frontend/.env.development
@@ -1,3 +1,4 @@
 NODE_ENV='development'
 VUE_APP_BASE_URL=http://localhost:8000
-VUE_APP_CRAWLAB_BASE_URL=https://api.crawlab.cn
\ No newline at end of file
+VUE_APP_CRAWLAB_BASE_URL=https://api.crawlab.cn
+VUE_APP_DOC_URL=http://docs.crawlab.cn
diff --git a/frontend/.env.production b/frontend/.env.production
index d01edd25..7cca0821 100644
--- a/frontend/.env.production
+++ b/frontend/.env.production
@@ -1,3 +1,4 @@
 NODE_ENV='production'
 VUE_APP_BASE_URL=/api
 VUE_APP_CRAWLAB_BASE_URL=https://api.crawlab.cn
+VUE_APP_DOC_URL=http://docs.crawlab.cn
diff --git a/frontend/.env.test b/frontend/.env.test
index e9aeafc9..f29b1cd3 100644
--- a/frontend/.env.test
+++ b/frontend/.env.test
@@ -1,3 +1,4 @@
 NODE_ENV='test'
 VUE_APP_BASE_URL='http://localhost:8000'
 VUE_APP_CRAWLAB_BASE_URL=https://api.crawlab.cn
+VUE_APP_DOC_URL=http://docs.crawlab.cn
diff --git a/frontend/src/components/Documentation/Documentation.vue b/frontend/src/components/Documentation/Documentation.vue
new file mode 100644
index 00000000..3c03b267
--- /dev/null
+++ b/frontend/src/components/Documentation/Documentation.vue
@@ -0,0 +1,84 @@
+<template>
+  <el-tree
+    :data="docData"
+    ref="documentation-tree"
+    node-key="path"
+  >
+    <span class="custom-tree-node" :class="data.active ? 'active' : ''" slot-scope="{ node, data }">
+      <template v-if="data.level === 1 && data.children && data.children.length">
+        <span>{{node.label}}</span>
+      </template>
+      <template v-else>
+        <span>
+          <a :href="data.url" target="_blank" style="display: block">
+            {{node.label}}
+          </a>
+        </span>
+      </template>
+    </span>
+  </el-tree>
+</template>
+
+<script>
+import {
+  mapState
+} from 'vuex'
+
+export default {
+  name: 'Documentation',
+  data () {
+    return {
+      data: []
+    }
+  },
+  computed: {
+    ...mapState('doc', [
+      'docData'
+    ]),
+    pathLv1 () {
+      if (this.$route.path === '/') return '/'
+      const m = this.$route.path.match(/(^\/\w+)/)
+      return m[1]
+    }
+  },
+  watch: {
+    pathLv1 () {
+      this.update()
+    }
+  },
+  methods: {
+    update () {
+      // expand related documentation list
+      setTimeout(() => {
+        this.docData.forEach(d => {
+          const node = this.$refs['documentation-tree'].getNode(d)
+          let isActive = false
+          for (let i = 0; i < this.$utils.doc.docs.length; i++) {
+            const pattern = this.$utils.doc.docs[i]
+            if (d.url.match(pattern)) {
+              isActive = true
+              break
+            }
+          }
+          node.expanded = isActive
+          this.$set(d, 'active', isActive)
+        })
+      }, 100)
+    },
+    async getDocumentationData () {
+      // fetch api data
+      await this.$store.dispatch('doc/getDocData')
+    }
+  },
+  async created () {
+  },
+  mounted () {
+    this.update()
+  }
+}
+</script>
+<style scoped>
+  .el-tree >>> .custom-tree-node.active {
+    color: #409eff;
+  }
+</style>
diff --git a/frontend/src/i18n/zh.js b/frontend/src/i18n/zh.js
index 10211c3d..f02ca169 100644
--- a/frontend/src/i18n/zh.js
+++ b/frontend/src/i18n/zh.js
@@ -450,6 +450,10 @@ export default {
   'General': '通用',
   'Enable Tutorial': '启用教程',
 
+  // 全局
+  'Related Documentation': '相关文档',
+  'Click to view related Documentation': '点击查看相关文档',
+
   // 其他
   tagsView: {
     closeOthers: '关闭其他',
diff --git a/frontend/src/store/index.js b/frontend/src/store/index.js
index 4fcb86db..9afa6d40 100644
--- a/frontend/src/store/index.js
+++ b/frontend/src/store/index.js
@@ -17,6 +17,7 @@ import setting from './modules/setting'
 import version from './modules/version'
 import tour from './modules/tour'
 import project from './modules/project'
+import doc from './modules/doc'
 import getters from './getters'
 
 Vue.use(Vuex)
@@ -39,6 +40,7 @@ const store = new Vuex.Store({
     version,
     tour,
     project,
+    doc,
     // 统计
     stats
   },
diff --git a/frontend/src/store/modules/doc.js b/frontend/src/store/modules/doc.js
new file mode 100644
index 00000000..7d2e9e98
--- /dev/null
+++ b/frontend/src/store/modules/doc.js
@@ -0,0 +1,61 @@
+import request from '../../api/request'
+
+const state = {
+  docData: []
+}
+
+const getters = {}
+
+const mutations = {
+  SET_DOC_DATA (state, value) {
+    state.docData = value
+  }
+}
+
+const actions = {
+  async getDocData ({ commit }) {
+    const res = await request.get('/docs')
+
+    const data = JSON.parse(res.data.data.string)
+
+    // init cache
+    const cache = {}
+
+    // iterate paths
+    for (let path in data) {
+      if (data.hasOwnProperty(path)) {
+        const d = data[path]
+        if (path.match(/\/$/)) {
+          cache[path] = d
+          cache[path].children = []
+        } else if (path.match(/\.html$/)) {
+          const parentPath = path.split('/')[0] + '/'
+          cache[parentPath].children.push(d)
+        }
+      }
+    }
+
+    commit('SET_DOC_DATA', Object.values(cache).map(d => {
+      d.level = 1
+      d.label = d.title
+      d.url = process.env.VUE_APP_DOC_URL + '/' + d.url
+      if (d.children) {
+        d.children = d.children.map(c => {
+          c.level = 2
+          c.label = c.title
+          c.url = process.env.VUE_APP_DOC_URL + '/' + c.url
+          return c
+        })
+      }
+      return d
+    }))
+  }
+}
+
+export default {
+  namespaced: true,
+  state,
+  getters,
+  mutations,
+  actions
+}
diff --git a/frontend/src/utils/doc.js b/frontend/src/utils/doc.js
new file mode 100644
index 00000000..ae41c282
--- /dev/null
+++ b/frontend/src/utils/doc.js
@@ -0,0 +1,20 @@
+export default {
+  docs: [
+    {
+      path: '/projects',
+      pattern: '^Project'
+    },
+    {
+      path: '/spiders',
+      pattern: '^Spider'
+    },
+    {
+      path: '/tasks',
+      pattern: '^Task'
+    },
+    {
+      path: '/schedules',
+      pattern: '^Schedule'
+    }
+  ]
+}
diff --git a/frontend/src/utils/index.js b/frontend/src/utils/index.js
index c371f672..765d0e93 100644
--- a/frontend/src/utils/index.js
+++ b/frontend/src/utils/index.js
@@ -3,11 +3,13 @@ import encrypt from './encrypt'
 import tour from './tour'
 import log from './log'
 import scrapy from './scrapy'
+import doc from './doc'
 
 export default {
   stats,
   encrypt,
   tour,
   log,
-  scrapy
+  scrapy,
+  doc
 }
diff --git a/frontend/src/views/layout/Layout.vue b/frontend/src/views/layout/Layout.vue
index 119c7337..b7aaa004 100644
--- a/frontend/src/views/layout/Layout.vue
+++ b/frontend/src/views/layout/Layout.vue
@@ -1,12 +1,36 @@
 <template>
   <div :class="classObj" class="app-wrapper">
     <div v-if="device==='mobile'&&sidebar.opened" class="drawer-bg" @click="handleClickOutside"></div>
+
+    <!--sidebar-->
     <sidebar class="sidebar-container"/>
+    <!--./sidebar-->
+
+    <!--main container-->
     <div class="main-container">
       <navbar/>
       <tags-view/>
       <app-main/>
     </div>
+    <!--./main container-->
+
+    <!--documentation-->
+    <div class="documentation">
+      <el-tooltip
+        :content="$t('Click to view related Documentation')"
+      >
+        <i class="el-icon-question" @click="onClickDocumentation"></i>
+      </el-tooltip>
+      <el-drawer
+        :title="$t('Related Documentation')"
+        :visible.sync="isShowDocumentation"
+        :before-close="onCloseDocumentation"
+        size="360px"
+      >
+        <documentation/>
+      </el-drawer>
+    </div>
+    <!--./documentation-->
   </div>
 </template>
 
@@ -18,16 +42,23 @@ import {
   TagsView
 } from './components'
 import ResizeMixin from './mixin/ResizeHandler'
+import Documentation from '../../components/Documentation/Documentation'
 
 export default {
   name: 'Layout',
   components: {
+    Documentation,
     Navbar,
     Sidebar,
     TagsView,
     AppMain
   },
   mixins: [ResizeMixin],
+  data () {
+    return {
+      isShowDocumentation: false
+    }
+  },
   computed: {
     sidebar () {
       return this.$store.state.app.sidebar
@@ -47,7 +78,18 @@ export default {
   methods: {
     handleClickOutside () {
       this.$store.dispatch('CloseSideBar', { withoutAnimation: false })
+    },
+    onClickDocumentation () {
+      this.isShowDocumentation = true
+
+      this.$st.sendEv('全局', '点击页面文档')
+    },
+    onCloseDocumentation () {
+      this.isShowDocumentation = false
     }
+  },
+  async created () {
+    await this.$store.dispatch('doc/getDocData')
   }
 }
 </script>
@@ -77,4 +119,45 @@ export default {
     position: absolute;
     z-index: 999;
   }
+
+  .documentation {
+    z-index: 9999;
+    position: fixed;
+    right: 25px;
+    bottom: 20px;
+    font-size: 24px;
+    cursor: pointer;
+    color: #909399;
+  }
+</style>
+
+<style scoped>
+  .documentation .el-tree {
+    margin-left: 20px;
+  }
+
+  .documentation >>> span[role="heading"]:focus {
+    outline: none;
+  }
+
+  .documentation >>> .el-tree-node__content {
+    height: 40px;
+    line-height: 40px;
+  }
+
+  .documentation >>> .custom-tree-node {
+    display: block;
+    width: 100%;
+    height: 40px;
+    line-height: 40px;
+    font-size: 14px;
+  }
+
+  .documentation >>> .custom-tree-node a {
+    display: block;
+  }
+
+  .documentation >>> .custom-tree-node:hover a {
+    text-decoration: underline;
+  }
 </style>