diff --git a/app/admin/controller/v1/SiteConfig.php b/app/admin/controller/v1/SiteConfig.php
index 68710f5d..a1a6cc56 100644
--- a/app/admin/controller/v1/SiteConfig.php
+++ b/app/admin/controller/v1/SiteConfig.php
@@ -152,12 +152,12 @@ class SiteConfig
 
         $validate = validate([
                 'id'    => 'require|integer',
-                'value' => 'max:255'
+                'value' => 'max:512'
             ])
             ->message([
                 'id.require'    => '配置项ID不能为空',
                 'id.integer'    => '配置项ID必须是整数',
-                'value.max'     => '配置值不能超过255个字符'
+                'value.max'     => '配置值不能超过512个字符'
             ]);
         foreach ($put as $val) {
             if (!$validate->check($val)) {
diff --git a/app/admin/validate/v1/SysConfigValidate.php b/app/admin/validate/v1/SysConfigValidate.php
index 8ffc9d35..a64b1060 100644
--- a/app/admin/validate/v1/SysConfigValidate.php
+++ b/app/admin/validate/v1/SysConfigValidate.php
@@ -19,8 +19,8 @@ class SysConfigValidate extends Validate
         'group_id' => 'require|integer',
         'title'    => 'require|max:64',
         'name'     => 'require|unique:sys_config,group_id^name|max:64',
-        'value'    => 'max:255',
-        'extra'    => 'max:255|checkLinkage',
+        'value'    => 'max:512',
+        'extra'    => 'max:512|checkLinkage',
         'type'     => 'max:64',
         'sort'     => 'integer',
         'remark'   => 'max:255'
@@ -42,8 +42,8 @@ class SysConfigValidate extends Validate
         'name.require'     => '标识不能为空',
         'name.unique'      => '标识已存在',
         'name.max'         => '名称最多不能超过64个字符',
-        'value.max'        => '值最多不能超过255个字符',
-        'extra.max'        => '额外信息最多不能超过255个字符',
+        'value.max'        => '值最多不能超过512个字符',
+        'extra.max'        => '额外信息最多不能超过512个字符',
         'type.max'         => '类型最多不能超过64个字符',
         'sort.integer'     => '排序必须是整数',
         'remark.max'       => '备注最多不能超过255个字符',
diff --git a/database/migrations/20241230064542_create_sys_config.php b/database/migrations/20241230064542_create_sys_config.php
index 9b510ca0..fb081563 100644
--- a/database/migrations/20241230064542_create_sys_config.php
+++ b/database/migrations/20241230064542_create_sys_config.php
@@ -31,8 +31,8 @@ class CreateSysConfig extends Migrator
         $table->addColumn('group_id', 'integer', ['limit' => 11, 'null' => false, 'comment' => '分组ID'])
             ->addColumn('title', 'string', ['limit' => 64, 'null' => false, 'comment' => '配置标题'])
             ->addColumn('name', 'string', ['limit' => 64, 'null' => false, 'comment' => '配置名称'])
-            ->addColumn('value', 'string', ['limit' => 255, 'null' => true, 'default' => null, 'comment' => '配置值'])
-            ->addColumn('extra', 'string', ['limit' => 255, 'null' => true, 'default' => null, 'comment' => '配置额外信息'])
+            ->addColumn('value', 'string', ['limit' => 512, 'null' => true, 'default' => null, 'comment' => '配置值'])
+            ->addColumn('extra', 'string', ['limit' => 512, 'null' => true, 'default' => null, 'comment' => '配置额外信息'])
             ->addColumn('type', 'string', ['limit' => 64, 'null' => false, 'comment' => '配置类型: text, textarea, number, select, checkbox, radio, date, time, datetime'])
             ->addColumn('sort', 'integer', ['limit' => 11, 'null' => false, 'default' => 0, 'comment' => '排序'])
             ->addColumn('remark', 'string', ['limit' => 255, 'null' => true, 'default' => null, 'comment' => '备注'])