diff --git a/app/admin/validate/v1/SysConfigValidate.php b/app/admin/validate/v1/SysConfigValidate.php
index 8ed95d18..2cea8afc 100644
--- a/app/admin/validate/v1/SysConfigValidate.php
+++ b/app/admin/validate/v1/SysConfigValidate.php
@@ -3,6 +3,7 @@ declare (strict_types = 1);
 
 namespace app\admin\validate\v1;
 
+use app\admin\model\v1\SysConfigModel;
 use think\Validate;
 
 class SysConfigValidate extends Validate
@@ -19,7 +20,7 @@ class SysConfigValidate extends Validate
         'title'    => 'require|max:64',
         'name'     => 'require|unique:sys_config|max:64',
         'value'    => 'max:255',
-        'extra'    => 'max:255',
+        'extra'    => 'max:255|checkLinkage',
         'type'     => 'max:64',
         'sort'     => 'integer',
         'remark'   => 'max:255'
@@ -53,4 +54,54 @@ class SysConfigValidate extends Validate
     {
         return $this->remove('id', 'require|integer');
     }
+
+    // 验证额外配置项中联动数据配置
+    protected function checkLinkage($value, $rule, $data)
+    {
+        if (empty($value)) {
+            return true;
+        }
+
+        $submit_linkage_names = [];
+        $submit_extra         = explode(PHP_EOL, $value);
+        foreach ($submit_extra as $v) {
+            if (preg_match('/^([^:]+):(.*?)(?:\[(.*?)\])?$/i', trim($v), $match)) {
+                if (isset($match[3])) {
+                    $submit_linkage_names = array_merge($submit_linkage_names, array_map(function ($it) {
+                        return str_replace(['"', "'"], '', trim($it));
+                    }, explode(',', $match[3])));
+                }
+            }
+        }
+
+        $configs_extra  = SysConfigModel::whereNotNull('extra')
+            ->where('extra', '<>', '')
+            ->where(function($query) use($data) {
+                if (isset($data['id'])) {
+                    $query->where('id', '<>', $data['id']);
+                }
+            })
+            ->column('extra');
+        $exists_linkage_names = [];
+        foreach ($configs_extra as $it) {
+            $exists_extra = explode(PHP_EOL, $it);
+            foreach ($exists_extra as $v) {
+                if (preg_match('/^([^:]+):(.*?)(?:\[(.*?)\])?$/i', trim($v), $match)) {
+                    if (isset($match[3])) {
+                        $exists_linkage_names = array_merge($exists_linkage_names, array_map(function ($it) {
+                            return str_replace(['"', "'"], '', trim($it));
+                        }, explode(',', $match[3])));
+                    }
+                }
+            }
+        }
+
+        $intersect = array_intersect($submit_linkage_names, $exists_linkage_names);
+        if (!empty($intersect)) {
+            $v = implode(',', $intersect);
+            return "{$v}被多次设为联动配置项";
+        }
+        
+        return true;
+    }
 }