diff --git a/CHANGELOG-zh.md b/CHANGELOG-zh.md
index 83440bbb..e0b5693f 100644
--- a/CHANGELOG-zh.md
+++ b/CHANGELOG-zh.md
@@ -1,4 +1,4 @@
-# 0.4.5 (unkown)
+# 0.4.5 (2020-02-03)
 ### 功能 / 优化
 - **交互式教程**. 引导用户了解 Crawlab 的主要功能.
 - **加入全局环境变量**. 可以设置全局环境变量，然后传入到所有爬虫程序中. [#177](https://github.com/crawlab-team/crawlab/issues/177)
diff --git a/README.md b/README.md
index 54144a11..4727d6e2 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,7 @@ Two methods:
 
 ## Quick Start
 
-Please open the command line prompt and execute the command beloe. Make sure you have installed `docker-compose` in advance.
+Please open the command line prompt and execute the command below. Make sure you have installed `docker-compose` in advance.
 
 ```bash
 git clone https://github.com/crawlab-team/crawlab
@@ -243,7 +243,7 @@ Crawlab is easy to use, general enough to adapt spiders in any language and any
 
 |Framework | Technology | Pros | Cons | Github Stats |
 |:---|:---|:---|-----| :---- |
-| [Crawlab](https://github.com/crawlab-team/crawlab) | Golang + Vue|Not limited to Scrapy, available for all programming languages and frameworks. Beautiful UI interface. Naturally support distributed spiders. Support spider mangement, task management, cron job, result export, analytics, notifications, configurable spiders, online code editor, etc.|Not yet support spider versioning| ![](https://img.shields.io/github/stars/crawlab-team/crawlab) ![](https://img.shields.io/github/forks/crawlab-team/crawlab) |
+| [Crawlab](https://github.com/crawlab-team/crawlab) | Golang + Vue|Not limited to Scrapy, available for all programming languages and frameworks. Beautiful UI interface. Naturally support distributed spiders. Support spider management, task management, cron job, result export, analytics, notifications, configurable spiders, online code editor, etc.|Not yet support spider versioning| ![](https://img.shields.io/github/stars/crawlab-team/crawlab) ![](https://img.shields.io/github/forks/crawlab-team/crawlab) |
 | [ScrapydWeb](https://github.com/my8100/scrapydweb) | Python Flask + Vue|Beautiful UI interface, built-in Scrapy log parser, stats and graphs for task execution, support node management, cron job, mail notification, mobile. Full-feature spider management platform.|Not support spiders other than Scrapy. Limited performance because of Python Flask backend.| ![](https://img.shields.io/github/stars/my8100/scrapydweb) ![](https://img.shields.io/github/forks/my8100/scrapydweb) |
 | [Gerapy](https://github.com/Gerapy/Gerapy) | Python Django + Vue|Gerapy is built by web crawler guru [Germey Cui](https://github.com/Germey). Simple installation and deployment. Beautiful UI interface. Support node management, code edit, configurable crawl rules, etc.|Again not support spiders other than Scrapy. A lot of bugs based on user feedback in v1.0. Look forward to improvement in v2.0| ![](https://img.shields.io/github/stars/Gerapy/Gerapy) ![](https://img.shields.io/github/forks/Gerapy/Gerapy) |
 | [SpiderKeeper](https://github.com/DormyMo/SpiderKeeper) | Python Flask|Open-source Scrapyhub. Concise and simple UI interface. Support cron job.|Perhaps too simplified, not support pagination, not support node management, not support spiders other than Scrapy.| ![](https://img.shields.io/github/stars/DormyMo/SpiderKeeper) ![](https://img.shields.io/github/forks/DormyMo/SpiderKeeper) |
diff --git a/frontend/src/i18n/zh.js b/frontend/src/i18n/zh.js
index 8a3fb800..0a703620 100644
--- a/frontend/src/i18n/zh.js
+++ b/frontend/src/i18n/zh.js
@@ -496,6 +496,7 @@ docker run -d --restart always --name crawlab_worker \\
   'Here you can set your password.': '这里您可以设置您的密码',
   'In this tab you can configure your notification settings.': '在这个标签中，您可以配置您的消息通知配置',
   'Here you can add/edit/delete global environment variables which will be passed into your spider programs.': '这里您可以添加/修改/删除全局环境变量，它们会被传入爬虫程序中',
+  'You are running on a mobile device, which is not optimized yet. Please try with a laptop or desktop.': '您正在没有优化过的移动端上浏览，我们建议您用电脑来访问',
 
   // 其他
   'Star crawlab-team/crawlab on GitHub': '在 GitHub 上为 Crawlab 加星吧'
diff --git a/frontend/src/views/login/index.vue b/frontend/src/views/login/index.vue
index 5bad9935..b3559e49 100644
--- a/frontend/src/views/login/index.vue
+++ b/frontend/src/views/login/index.vue
@@ -73,6 +73,11 @@
         <span @click="setLang('zh')" :class="lang==='zh'?'active':''">中文</span>
         <span @click="setLang('en')" :class="lang==='en'?'active':''">English</span>
       </div>
+      <div v-if="isShowMobileWarning" class="mobile-warning">
+        <el-alert type="error" :closable="false">
+          {{$t('You are running on a mobile device, which is not optimized yet. Please try with a laptop or desktop.')}}
+        </el-alert>
+      </div>
     </el-form>
   </div>
 </template>
@@ -121,7 +126,8 @@ export default {
         confirmPassword: [{ required: true, trigger: 'blur', validator: validateConfirmPass }]
       },
       loading: false,
-      pwdType: 'password'
+      pwdType: 'password',
+      isShowMobileWarning: false
     }
   },
   computed: {
@@ -179,7 +185,11 @@ export default {
     }
   },
   mounted () {
-    initCanvas()
+    if (window.innerWidth >= 1024) {
+      initCanvas()
+    } else {
+      this.isShowMobileWarning = true
+    }
   }
 }
 
@@ -455,5 +465,15 @@ const initCanvas = () => {
         text-decoration: underline;
       }
     }
+
+    .mobile-warning {
+      margin-top: 20px;
+    }
+
+  }
+</style>
+<style scoped>
+  .mobile-warning >>> .el-alert .el-alert__description {
+    font-size: 1.2rem;
   }
 </style>