diff --git a/continew-admin-system/src/main/java/top/continew/admin/system/model/req/StorageReq.java b/continew-admin-system/src/main/java/top/continew/admin/system/model/req/StorageReq.java
index 2dca57b5..8abbbb45 100644
--- a/continew-admin-system/src/main/java/top/continew/admin/system/model/req/StorageReq.java
+++ b/continew-admin-system/src/main/java/top/continew/admin/system/model/req/StorageReq.java
@@ -76,7 +76,6 @@ public class StorageReq extends BaseReq {
      * 私有密钥
      */
     @Schema(description = "私有密钥", example = "")
-    @Length(max = 255, message = "私有密钥长度不能超过 {max} 个字符")
     private String secretKey;
 
     /**
diff --git a/continew-admin-system/src/main/java/top/continew/admin/system/service/impl/StorageServiceImpl.java b/continew-admin-system/src/main/java/top/continew/admin/system/service/impl/StorageServiceImpl.java
index 1e920e31..97312df8 100644
--- a/continew-admin-system/src/main/java/top/continew/admin/system/service/impl/StorageServiceImpl.java
+++ b/continew-admin-system/src/main/java/top/continew/admin/system/service/impl/StorageServiceImpl.java
@@ -189,6 +189,7 @@ public class StorageServiceImpl extends BaseServiceImpl<StorageMapper, StorageDO
         // 新增时或修改了 SecretKey
         String secretKey = ExceptionUtils.exToNull(() -> SecureUtils.decryptByRsaPrivateKey(newSecretKey));
         ValidationUtils.throwIfNull(secretKey, "私有密钥解密失败");
+        ValidationUtils.throwIf(secretKey.length() > 255, "私有密钥长度不能超过 255 个字符");
         req.setSecretKey(secretKey);
     }