diff --git a/build_ui/src/assets/images/avatars/admin.jpg b/build_ui/src/assets/images/avatars/admin.jpg
new file mode 100644
index 000000000..305a91839
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diff --git a/build_ui/src/assets/images/avatars/default.jpg b/build_ui/src/assets/images/avatars/default.jpg
new file mode 100644
index 000000000..9b7d1834c
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diff --git a/build_ui/src/assets/images/avatars/student.jpg b/build_ui/src/assets/images/avatars/student.jpg
new file mode 100644
index 000000000..8e94a665c
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diff --git a/build_ui/src/assets/images/avatars/teacher.jpg b/build_ui/src/assets/images/avatars/teacher.jpg
new file mode 100644
index 000000000..b6dcf1fbd
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diff --git a/build_ui/src/assets/images/avatars/train_admin.jpg b/build_ui/src/assets/images/avatars/train_admin.jpg
new file mode 100644
index 000000000..40026a5de
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diff --git a/build_ui/src/assets/images/kg.png b/build_ui/src/assets/images/kg.png
deleted file mode 100644
index ff2f70c4d..000000000
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diff --git a/build_ui/src/assets/images/kg1.png b/build_ui/src/assets/images/kg1.png
deleted file mode 100644
index a2dfb2c0f..000000000
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diff --git a/build_ui/src/assets/images/login-background.jpg b/build_ui/src/assets/images/login-background.jpg
deleted file mode 100644
index 8a89eb829..000000000
Binary files a/build_ui/src/assets/images/login-background.jpg and /dev/null differ
diff --git a/build_ui/src/assets/images/profile.jpg b/build_ui/src/assets/images/profile.jpg
deleted file mode 100644
index b3a940b21..000000000
Binary files a/build_ui/src/assets/images/profile.jpg and /dev/null differ
diff --git a/build_ui/src/assets/images/version.png b/build_ui/src/assets/images/version.png
deleted file mode 100644
index 5020e2e53..000000000
Binary files a/build_ui/src/assets/images/version.png and /dev/null differ
diff --git a/build_ui/src/layout/components/Navbar.vue b/build_ui/src/layout/components/Navbar.vue
index a8ad43565..6cd2b538a 100644
--- a/build_ui/src/layout/components/Navbar.vue
+++ b/build_ui/src/layout/components/Navbar.vue
@@ -32,6 +32,7 @@ import { mapGetters } from 'vuex'
 import Breadcrumb from '@/components/Breadcrumb'
 import TopNav from '@/components/TopNav'
 import Hamburger from '@/components/Hamburger'
+import { getRoleAvatar } from '@/utils/avatar'
 
 export default {
   components: {
@@ -41,7 +42,6 @@ export default {
   },
   data() {
     return {
-      defaultAvatar: require('@/assets/images/profile.jpg'),
       avatarLoadFailed: false
     }
   },
@@ -49,11 +49,12 @@ export default {
     ...mapGetters([
       'sidebar',
       'avatar',
-      'device'
+      'device',
+      'roles'
     ]),
     avatarSrc() {
       if (this.avatarLoadFailed || !this.avatar) {
-        return this.defaultAvatar
+        return getRoleAvatar(this.roles)
       }
       return this.avatar
     },
diff --git a/build_ui/src/store/modules/user.js b/build_ui/src/store/modules/user.js
index e79a260a5..6464b1745 100644
--- a/build_ui/src/store/modules/user.js
+++ b/build_ui/src/store/modules/user.js
@@ -1,5 +1,6 @@
 import { login, logout, getInfo } from '@/api/login'
 import { getToken, setToken, removeToken, setDpToken } from '@/utils/auth'
+import { getRoleAvatar } from '@/utils/avatar'
 import axios from 'axios'
 import {setting} from "@/config";
 
@@ -85,7 +86,12 @@ const user = {
       return new Promise((resolve, reject) => {
         getInfo().then(res => {
           const user = res.user
-          const avatar = (user.avatar == "" || user.avatar == null) ? require("@/assets/images/profile.jpg") : process.env.VUE_APP_BASE_API + user.avatar;
+          const isBrokenAvatar = user.avatar && user.avatar.includes('899d3f8e438f427eac6aeec76e489b52')
+          const avatar = (user.avatar == "" || user.avatar == null || isBrokenAvatar)
+            ? getRoleAvatar(res.roles)
+            : (user.avatar.indexOf('http') === 0 || user.avatar.indexOf('data:') === 0
+                ? user.avatar
+                : process.env.VUE_APP_BASE_API + user.avatar);
           // 先写入业务身份标志，保证角色就绪时自服务判定已同步到位；后端未返回时按无身份处理
           commit('SET_SELF_SERVICE', res.selfService)
           if (res.roles && res.roles.length > 0) { // 验证返回的roles是否是一个非空数组
diff --git a/build_ui/src/utils/avatar.js b/build_ui/src/utils/avatar.js
new file mode 100644
index 000000000..e04f7c690
--- /dev/null
+++ b/build_ui/src/utils/avatar.js
@@ -0,0 +1,66 @@
+import defaultAvatar from '@/assets/images/avatars/default.jpg'
+import adminAvatar from '@/assets/images/avatars/admin.jpg'
+import trainAdminAvatar from '@/assets/images/avatars/train_admin.jpg'
+import teacherAvatar from '@/assets/images/avatars/teacher.jpg'
+import studentAvatar from '@/assets/images/avatars/student.jpg'
+
+export {
+  defaultAvatar,
+  adminAvatar,
+  trainAdminAvatar,
+  teacherAvatar,
+  studentAvatar
+}
+
+/**
+ * 根据用户角色判定合适的职业默认头像
+ * @param {Array|string} roles 用户角色数组或角色key
+ * @returns {string} 头像资源路径
+ */
+export function getRoleAvatar(roles) {
+  if (!roles) return defaultAvatar
+  const roleList = Array.isArray(roles) ? roles : [roles]
+  if (roleList.includes('admin')) {
+    return adminAvatar
+  }
+  if (roleList.includes('train_admin')) {
+    return trainAdminAvatar
+  }
+  if (roleList.includes('train_teacher')) {
+    return teacherAvatar
+  }
+  if (roleList.includes('train_student')) {
+    return studentAvatar
+  }
+  return defaultAvatar
+}
+
+/**
+ * 获取教师头像 (空或404死链时返回专业讲师头像)
+ * @param {string} avatar 数据库中的头像路径
+ * @returns {string}
+ */
+export function getTeacherAvatar(avatar) {
+  if (!avatar || avatar.trim() === '' || avatar.includes('899d3f8e438f427eac6aeec76e489b52')) {
+    return teacherAvatar
+  }
+  if (avatar.indexOf('http') === 0 || avatar.indexOf('data:') === 0) {
+    return avatar
+  }
+  return process.env.VUE_APP_BASE_API + avatar
+}
+
+/**
+ * 获取学员头像 (空或404死链时返回专业学员工装头像)
+ * @param {string} avatar 数据库中的头像路径
+ * @returns {string}
+ */
+export function getStudentAvatar(avatar) {
+  if (!avatar || avatar.trim() === '' || avatar.includes('899d3f8e438f427eac6aeec76e489b52')) {
+    return studentAvatar
+  }
+  if (avatar.indexOf('http') === 0 || avatar.indexOf('data:') === 0) {
+    return avatar
+  }
+  return process.env.VUE_APP_BASE_API + avatar
+}
diff --git a/build_ui/src/views/system/user/profile/userAvatar.vue b/build_ui/src/views/system/user/profile/userAvatar.vue
index b429e6d07..75f74f25d 100644
--- a/build_ui/src/views/system/user/profile/userAvatar.vue
+++ b/build_ui/src/views/system/user/profile/userAvatar.vue
@@ -58,6 +58,7 @@ import store from '@/store'
 import { VueCropper } from 'vue-cropper'
 import { uploadAvatar } from '@/api/system/user'
 import { debounce } from '@/utils'
+import { getRoleAvatar } from '@/utils/avatar'
 
 export default {
   components: { VueCropper },
@@ -75,7 +76,7 @@ export default {
       // 弹出层标题
       title: '修改头像',
       options: {
-        img: store.getters.avatar, // 裁剪图片的地址
+        img: store.getters.avatar || getRoleAvatar(store.getters.roles), // 裁剪图片的地址
         autoCrop: true, // 是否默认生成截图框
         autoCropWidth: 200, // 默认生成截图框宽度
         autoCropHeight: 200, // 默认生成截图框高度
@@ -88,7 +89,7 @@ export default {
   },
   methods: {
     handleAvatarError() {
-      this.options.img = require('@/assets/images/profile.jpg')
+      this.options.img = getRoleAvatar(store.getters.roles)
     },
     // 编辑头像
     editCropper() {
diff --git a/build_ui/src/views/train/me/student/index.vue b/build_ui/src/views/train/me/student/index.vue
index 2cfb5538f..6c827c6e6 100644
--- a/build_ui/src/views/train/me/student/index.vue
+++ b/build_ui/src/views/train/me/student/index.vue
@@ -35,7 +35,7 @@
           <div v-loading="profileLoading">
             <div v-if="studentProfile" class="profile-detail">
               <div class="profile-avatar">
-                <el-avatar :size="72" icon="el-icon-user" style="background-color: #409eff;" />
+                <el-avatar :size="72" :src="studentAvatarSrc" icon="el-icon-user" style="background-color: #409eff;" />
                 <div class="name-block">{{ studentProfile.sName }}</div>
                 <div class="id-block">学号：{{ studentProfile.sId }}</div>
               </div>
@@ -307,6 +307,7 @@
 </template>
 
 <script>
+import { getStudentAvatar } from '@/utils/avatar'
 import * as echarts from 'echarts'
 import {
   getStudentProfile,
@@ -356,6 +357,9 @@ export default {
     attendanceAbnormalCount() {
       if (!this.attendanceList || this.attendanceList.length === 0) return 0
       return this.attendanceList.filter(i => i.checkinStatus != null && i.checkinStatus !== 1).length
+    },
+    studentAvatarSrc() {
+      return getStudentAvatar(this.studentProfile && this.studentProfile.avatar)
     }
   },
   created() {
diff --git a/build_ui/src/views/train/me/teacher/index.vue b/build_ui/src/views/train/me/teacher/index.vue
index dac4f9775..2a9bafca5 100644
--- a/build_ui/src/views/train/me/teacher/index.vue
+++ b/build_ui/src/views/train/me/teacher/index.vue
@@ -35,7 +35,7 @@
           <div v-loading="profileLoading">
             <div v-if="teacherProfile" class="profile-detail">
               <div class="profile-avatar">
-                <el-avatar :size="72" icon="el-icon-user-solid" style="background-color: #1890ff;" />
+                <el-avatar :size="72" :src="teacherAvatarSrc" icon="el-icon-user-solid" style="background-color: #1890ff;" />
                 <div class="name-block">{{ teacherProfile.tName }}</div>
                 <div class="id-block">工号：{{ teacherProfile.tId }}</div>
               </div>
@@ -268,6 +268,7 @@
 </template>
 
 <script>
+import { getTeacherAvatar } from '@/utils/avatar'
 import {
   getTeacherProfile,
   getMyPlans,
@@ -278,6 +279,11 @@ import {
 
 export default {
   name: 'TeacherWorkbench',
+  computed: {
+    teacherAvatarSrc() {
+      return getTeacherAvatar(this.teacherProfile && this.teacherProfile.avatar)
+    }
+  },
   data() {
     return {
       activeTab: 'plans',
diff --git a/build_ui/src/views/train/student/index.vue b/build_ui/src/views/train/student/index.vue
index bbaf69bbe..baa1e2c3a 100644
--- a/build_ui/src/views/train/student/index.vue
+++ b/build_ui/src/views/train/student/index.vue
@@ -379,6 +379,7 @@ import {addTeacher, updateTeacher} from "@/api/train/teacher";
 import {listPlan} from "@/api/train/plan";
 import {listPlanEnrollments} from "@/api/train/enrollment";
 import {getActiveAccommodation} from "@/api/train/accommodation";
+import { getStudentAvatar } from '@/utils/avatar';
 export default {
   name: 'Student',
   components: { studentAvatar, Treeselect },
@@ -879,15 +880,9 @@ export default {
         this.$refs.createForm.clearValidate('avatar')
       }
     },
-    // 头像地址解析：补全 baseApi，空值使用默认头像
+    // 头像地址解析：补全 baseApi，空值使用专业学员工装默认头像
     avatarUrl(avatar) {
-      if (!avatar) {
-        return require('@/assets/images/profile.jpg')
-      }
-      if (avatar.indexOf('http') === 0 || avatar.indexOf('data:') === 0) {
-        return avatar
-      }
-      return process.env.VUE_APP_BASE_API + avatar
+      return getStudentAvatar(avatar)
     },
     submitCreate() {
       /*this.$refs.createForm.validate(valid => {
diff --git a/build_ui/src/views/train/student/studentAvatar.vue b/build_ui/src/views/train/student/studentAvatar.vue
index 8c803f6e1..3f6beecb7 100644
--- a/build_ui/src/views/train/student/studentAvatar.vue
+++ b/build_ui/src/views/train/student/studentAvatar.vue
@@ -58,8 +58,10 @@ import { VueCropper } from 'vue-cropper'
 import request from '@/utils/request'
 import { debounce } from '@/utils'
 
-// 默认头像
-const DEFAULT_AVATAR = require('@/assets/images/profile.jpg')
+import { studentAvatar } from '@/utils/avatar'
+
+// 默认学员职业头像
+const DEFAULT_AVATAR = studentAvatar
 
 export default {
   components: { VueCropper },
diff --git a/build_ui/src/views/train/teacher/index.vue b/build_ui/src/views/train/teacher/index.vue
index 91f8c0460..fd9dd4129 100644
--- a/build_ui/src/views/train/teacher/index.vue
+++ b/build_ui/src/views/train/teacher/index.vue
@@ -349,6 +349,7 @@ import {listDept} from "@/api/system/dept";
 // 复用学员头像上传组件（通用：props.user 传入 {avatar}，上传成功后抛出 success 事件）
 import studentAvatar from '@/views/train/student/studentAvatar'
 import request from '@/utils/request'
+import { getTeacherAvatar } from '@/utils/avatar'
 export default {
   name: 'Teacher',
   components: { Treeselect, studentAvatar },
@@ -690,15 +691,9 @@ export default {
         this.$refs.form.clearValidate('avatar')
       }
     },
-    /** 头像地址解析：补全 baseApi，空值使用默认头像 */
+    /** 头像地址解析：补全 baseApi，空值使用专业讲师默认头像 */
     avatarUrl(avatar) {
-      if (!avatar) {
-        return require('@/assets/images/profile.jpg')
-      }
-      if (avatar.indexOf('http') === 0 || avatar.indexOf('data:') === 0) {
-        return avatar
-      }
-      return process.env.VUE_APP_BASE_API + avatar
+      return getTeacherAvatar(avatar)
     },
     /** 搜索按钮操作 */
     handleQuery() {
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diff --git a/build_ui/static/images/one.png b/build_ui/static/images/one.png
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diff --git a/build_ui/static/images/tab-custom-right.png b/build_ui/static/images/tab-custom-right.png
deleted file mode 100644
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diff --git a/build_ui/static/images/tab-custom.png b/build_ui/static/images/tab-custom.png
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diff --git a/build_ui/static/images/theme/dark/theme.css b/build_ui/static/images/theme/dark/theme.css
deleted file mode 100644
index 9792bc9de..000000000
--- a/build_ui/static/images/theme/dark/theme.css
+++ /dev/null
@@ -1,79 +0,0 @@
-/*需要全屏的时候*/
-*{ margin: 0; padding:0; }
-html,body{ width: 100%; height: 100%; font: "Mcriosofte Yahei";  background:#0D152A; }
-
-.text-center{ text-align: center; }
-.text-ellipsis{  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
-
-.outwrap{ width: 100%; height: 100%; }
-
-.pageLoading{ text-align: center; color:#fff; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background:#000; z-index: 1; }
-.pageLoading .layui-icon{  font-size: 60px; margin-top:20%; }
-
-/*结构块*/
-.bp-inline,
-.bp-inline .bp-img,
-.bp-inline .bp-label,
-.bp-inline .bp-label .bp-i{ display: inline-block; vertical-align: middle; margin:0 4px; }
-/*系统管理页面布局结构*/
-.sylogo{ height:16px; }
-.wrapper{ position:absolute; left:0; right:0; top:0; bottom:0;overflow:hidden; }
-.bp-header{ height: 40px; background:#1972C6; color:#F9F7F5; position: relative; }
-.top-logo{ margin-top: 6px; letter-spacing: 2px; }
-.bp-body{ background:#191B2B;  
-  position:absolute; 
-  left:0; top:40px; bottom:0; right:0; 
-  overflow:hidden; 
-}
-.bp-main{ 
-  position:absolute; left:0; top:0; right:0; bottom:0;
-  overflow:hidden;
-}
-.bp-board{ 
-  position:absolute;left:0px;right:0px;top:0;bottom:0px; }
-.usercenter{ height: 40px; padding-top: 6px; position: absolute; top: 0; right: 10px;  } 
-.user-avatar{ width:22px; height:22px; text-align: center; background:#3296F5;  
-  position:relative; flex-shrink:0; margin-left:5px;margin-right:5px; border-radius: 22px;}
-.usercenter a{ color: #fff; }
-
-.bp-classic .bp-board{background:#020B1E url(../images/boardbg.jpg) center bottom no-repeat;}
-.sessionPane{ background:#fff; border-radius:6px; padding:10px; margin:20px; }
-
-.banseo{width: 80%; max-width: 500px; height: 34px; left: 0; right: 0; margin:0 auto;   position: absolute; top:20%; }
-.seoicn {
-    position: absolute;
-    left: 20px;
-    bottom: -64px;
-    color: #b0bec5;
-    font-size: 18px;
-}
-.bantxt { width: 100%; height: 60px; opacity: 1;  background-color: #eceff1; border-radius: 5px; border: 0px; padding-left: 50px; color: #000; padding-right: 20px; outline: none; box-sizing: border-box; font-size: 16px; font-weight: bold;
-}
-.banbutt{height: 60px;
-    width: 173px;
-    background-color: #ec4d1c;
-    border: 0px;
-    color: #fff;
-    border-top-left-radius: 0px;
-    border-bottom-left-radius: 0px;
-    transition: all .7s ease 0s;
-    font-size: 15px;
-    background: -webkit-linear-gradient(top,#f4511e 0,#d84315 100%);
-    background: linear-gradient(to bottom,#f4511e 0,#d84315 100%);
-    position: absolute;  right: 0px; background-color: transparent;
-    border-width: 0px; outline: none;
-}
-
-
-/*自定义主题*/
-.layui-field-title small,
-.layui-form-label small{ color:#888; }
-
-.layui-form-label .zlabel-name{display: block; margin-top: -8px; font-size: 16px; font-weight: bold; 
-   
-}
-.layui-field-title{ margin-top: 20px; margin-bottom:40px; text-align: center; }
-.layui-form-label{ min-width:26%; }
-.layui-form-item .layui-input-inline{ width:45%; }
-
-.hide{ display: none; }
\ No newline at end of file
diff --git a/build_ui/static/images/theme/dark/theme.js b/build_ui/static/images/theme/dark/theme.js
deleted file mode 100644
index a625a2b26..000000000
--- a/build_ui/static/images/theme/dark/theme.js
+++ /dev/null
@@ -1,93 +0,0 @@
-/* 图表模版内使用字体配置 */
-var fntxt = 12,
-    fntit = 20;
-var ww = $(window).width();
-if(ww>2000){
-    fntxt = 18;
-    fntit = 30;
-}
-
-/* 修改字符串，每几个字换行 \n 换行 */
-function tempChartBr(str,type, long) {
-    var res = '';
-    var length = str.length;
-    var long = long?long:7;
-    var num = long;
-    //console.log(str)
-    length <= long ? num = length : (length <= 20 ? num = Math.ceil(length / 2) : num = Math.ceil(length / 3));
-    if (length > long) {
-        var reg = new RegExp("(.{" + num + "})", "g")
-        if(type){
-            res = str.replace(reg, '$1<br>').replace(/<br>$/, "");
-        }else{
-            res = str.replace(reg, '$1\n').replace(/\n$/, "");
-        }
-        //res = str.replace(reg, '$1\n').replace(/\n$/, "");
-        //str.replace(reg, '$1\n').replace(/\n$/,"");
-    } else {
-        res = str;
-    }
-    //console.log(res)
-    return res;
-}
-
-var defaultsBar = {
-    title:{
-        x:'50%',
-        textAlign: 'center',
-        textStyle:{  color:'#fff'}
-    },
-    tooltip:{trigger: 'axis', axisPointer:{type:'shadow'} ,textStyle:{ fontSize: fntxt } },
-    grid:{top:'14%',left:'3%',right:'4%',bottom:'3%',containLabel:true},
-    xAxis: {
-        axisLabel:{ textStyle:{  color:"#f8f8f8", fontSize : fntxt} , rotate:40},
-    },
-    yAxis: { 
-        axisLabel:{ textStyle:{  color:"#f8f8f8", fontSize : fntxt} }
-    },
-    series:[{
-        type:'bar',
-        barWidth:'15',
-        label:{
-            show:true,
-            textStyle:{ color:"#f8f8f8", fontSize :fntxt},
-            position:'outside',
-            //rotate:17
-        }, 
-        itemStyle:{normal:{barBorderRadius:30,color:new echarts.graphic.LinearGradient(0,0,0,1,[{offset:0,color:'#00feff'},{offset:0.5,color:'#027eff'},{offset:1,color:'#0286ff'}])}},
-    }]
-}
-
-var defaultsStackBar = { 
-    color:['#031C9E','#0058AA','#016CC7','#007DE3','#01B2F8','#00CAFC','#00CAFC','#031C9E','#0058AA','#016CC7','#007DE3','#01B2F8','#00CAFC','#031C9E','#016CC7','#007DE3','#01B2F8','#00CAFC','#031C9E'],
-    tooltip:{
-        trigger: 'axis',
-        axisPointer : { type : 'shadow' },
-        textStyle:{ fontSize: fntxt },
-        position:function(point, params, dom, rect, size){
-            return [point[1],0];
-        },
-        
-    }, 
-    toolbox:{
-        feature: { 
-            saveAsImage: {
-                backgroundColor:"#050A18"
-            }
-        }
-    },
-    xAxis: {
-        axisLabel:{ textStyle:{  color:"#f8f8f8", fontSize : fntxt} , rotate:40},
-    },
-    yAxis: { 
-        axisLabel:{ textStyle:{  color:"#f8f8f8", fontSize : fntxt} }
-    },
-    grid: {
-        top: '8%',
-        left: '3%',
-        right: '4%',
-        bottom: '3%',
-        containLabel: true
-    },
-    
-};
\ No newline at end of file
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