diff --git a/backend/application/api/controller/Common.php b/backend/application/api/controller/Common.php
index c9cd14b..6069d23 100644
--- a/backend/application/api/controller/Common.php
+++ b/backend/application/api/controller/Common.php
@@ -179,11 +179,15 @@ class Common extends Api
               'key' => $key == 0 ? '-1' : $key,
             ];
         }
+        // 过滤空值，避免配置项为空时返回空字符串标签
+        $toLabels = function ($value) {
+            return array_values(array_filter(array_map('trim', explode(',', $value ?? ''))));
+        };
         $config = [
-            'languageLabels' => explode(',', $code_languages),
-            'frontLabels' => explode(',', $front_techs),
-            'backendLabels' => explode(',', $back_techs),
-            'otherLabels' => explode(',', $other_techs),
+            'languageLabels' => $toLabels($code_languages),
+            'frontLabels' => $toLabels($front_techs),
+            'backendLabels' => $toLabels($back_techs),
+            'otherLabels' => $toLabels($other_techs),
             'developTypes' => $developTypes,
         ];
 
diff --git a/backend/application/api/controller/Developer.php b/backend/application/api/controller/Developer.php
index c9f4e1a..243a453 100644
--- a/backend/application/api/controller/Developer.php
+++ b/backend/application/api/controller/Developer.php
@@ -20,6 +20,10 @@ class Developer extends Api
      * @param array $images 图片数组
      * @param array $files 文件数组
      * @param string $contact 联系方式
+     * @param array $languageSelected 选中的编程语言
+     * @param array $frontSelected 选中的前端技术
+     * @param array $backendSelected 选中的后端技术
+     * @param array $otherSelected 选中的其它技术
      */
     public function submit()
     {
@@ -46,7 +50,16 @@ class Developer extends Api
             if (DeveloperService::getOne(['user_id' => $userId])) {
                 exception('您已经申请入驻，请勿重复申请！');
             }
-            $params['tags'] = array_filter(array_merge($params['languageSelected'], $params['frontSelected'], $params['backendSelected']));
+            // 合并各技术分类选中的标签（编程语言/前端技术/后端技术/其它技术）
+            $params['tags'] = array_values(array_unique(array_filter(array_merge(
+                (array)($params['languageSelected'] ?? []),
+                (array)($params['frontSelected'] ?? []),
+                (array)($params['backendSelected'] ?? []),
+                (array)($params['otherSelected'] ?? [])
+            ))));
+            if (empty($params['tags'])) {
+                $this->error('技能标签不能为空');
+            }
             DeveloperService::instance()->create($params, $userId);
             $this->success('申请已提交，等待审核通过即可接单');
         } catch (\Exception $e) {
diff --git a/backend/application/common/service/DeveloperService.php b/backend/application/common/service/DeveloperService.php
index 39f25e1..f39e42f 100644
--- a/backend/application/common/service/DeveloperService.php
+++ b/backend/application/common/service/DeveloperService.php
@@ -27,7 +27,7 @@ class DeveloperService
         $saveData = [
             'user_id' => $userId,
             'job' => $data['job'] ?? '',
-            'tags' => implode(',', $data['tags'] ?? ''),
+            'tags' => implode(',', array_filter((array)($data['tags'] ?? []))),
             'work_years' => $data['work_years'] ?? 0,
             'contact' => $data['contact'] ?? '',
             'desc' => $data['desc'] ?? '',
diff --git a/frontend/miniapp/pages/developer/join/index.js b/frontend/miniapp/pages/developer/join/index.js
index 3a5f4f9..4193af0 100644
--- a/frontend/miniapp/pages/developer/join/index.js
+++ b/frontend/miniapp/pages/developer/join/index.js
@@ -9,12 +9,15 @@ Page({
     languageLabels: [],
     frontLabels: [],
     backendLabels: [],
+    otherLabels: [],
     languageSelected: [],
     frontSelected: [],
     backendSelected: [],
+    otherSelected: [],
     languageSelectedMap: {},
     frontSelectedMap: {},
     backendSelectedMap: {},
+    otherSelectedMap: {},
     desc: '',
     job: '',
     workYears: 0,
@@ -28,9 +31,10 @@ Page({
     wx.$util.request(wx.$api.CommonGetMiniConfig, {}, 'GET').then(res => {
       if (res.code === 1) {
         this.setData({
-          languageLabels: res.data.languageLabels,
-          frontLabels: res.data.frontLabels,
-          backendLabels: res.data.backendLabels,
+          languageLabels: res.data.languageLabels || [],
+          frontLabels: res.data.frontLabels || [],
+          backendLabels: res.data.backendLabels || [],
+          otherLabels: res.data.otherLabels || [],
         });
       }
     });
@@ -64,11 +68,11 @@ Page({
     });
   },
   onSubmit() {
-    const { backendSelected, frontSelected, languageSelected, contact, job, workYears, desc } = this.data;
+    const { backendSelected, frontSelected, languageSelected, otherSelected, contact, job, workYears, desc } = this.data;
 
     const validations = [
       {
-        condition: !backendSelected.length && !frontSelected.length && !languageSelected.length,
+        condition: !backendSelected.length && !frontSelected.length && !languageSelected.length && !otherSelected.length,
         message: '技能不能为空'
       },
       {
@@ -106,6 +110,7 @@ Page({
           backendSelected: backendSelected,
           frontSelected: frontSelected,
           languageSelected: languageSelected,
+          otherSelected: otherSelected,
           job: job,
           contact: contact,
           work_years: workYears,
diff --git a/frontend/miniapp/pages/developer/join/index.wxml b/frontend/miniapp/pages/developer/join/index.wxml
index d771176..e037fa9 100644
--- a/frontend/miniapp/pages/developer/join/index.wxml
+++ b/frontend/miniapp/pages/developer/join/index.wxml
@@ -38,6 +38,18 @@
         >{{item}}</view>
       </view>
     </t-collapse-panel>
+    <t-collapse-panel header="其它技术" value="{{3}}">
+      <view class="chip-list">
+        <view
+          wx:for="{{otherLabels}}"
+          wx:key="index"
+          class="chip-item {{otherSelectedMap[item] ? 'chip-item--active' : ''}}"
+          data-field="other"
+          data-value="{{item}}"
+          bindtap="onChipTap"
+        >{{item}}</view>
+      </view>
+    </t-collapse-panel>
   </t-collapse>
 
   <t-divider />