diff --git a/yudao-module-system/yudao-module-system-server/src/main/java/cn/iocoder/yudao/module/system/controller/admin/auth/vo/AuthLoginReqVO.java b/yudao-module-system/yudao-module-system-server/src/main/java/cn/iocoder/yudao/module/system/controller/admin/auth/vo/AuthLoginReqVO.java
index 7325362ae..3c5775c09 100644
--- a/yudao-module-system/yudao-module-system-server/src/main/java/cn/iocoder/yudao/module/system/controller/admin/auth/vo/AuthLoginReqVO.java
+++ b/yudao-module-system/yudao-module-system-server/src/main/java/cn/iocoder/yudao/module/system/controller/admin/auth/vo/AuthLoginReqVO.java
@@ -22,8 +22,8 @@ public class AuthLoginReqVO extends CaptchaVerificationReqVO {
 
     @Schema(description = "账号", requiredMode = Schema.RequiredMode.REQUIRED, example = "yudaoyuanma")
     @NotEmpty(message = "登录账号不能为空")
-    @Length(min = 4, max = 16, message = "账号长度为 4-16 位")
-    @Pattern(regexp = "^[A-Za-z0-9]+$", message = "账号格式为数字以及字母")
+    @Length(min = 4, max = 30, message = "账号长度为 4-30 位")
+    @Pattern(regexp = "^[a-zA-Z0-9]{4,30}$", message = "账号格式为数字以及字母")
     private String username;
 
     @Schema(description = "密码", requiredMode = Schema.RequiredMode.REQUIRED, example = "buzhidao")
diff --git a/yudao-module-system/yudao-module-system-server/src/main/java/cn/iocoder/yudao/module/system/controller/admin/user/vo/user/UserSaveReqVO.java b/yudao-module-system/yudao-module-system-server/src/main/java/cn/iocoder/yudao/module/system/controller/admin/user/vo/user/UserSaveReqVO.java
index 482d14053..f196e651d 100644
--- a/yudao-module-system/yudao-module-system-server/src/main/java/cn/iocoder/yudao/module/system/controller/admin/user/vo/user/UserSaveReqVO.java
+++ b/yudao-module-system/yudao-module-system-server/src/main/java/cn/iocoder/yudao/module/system/controller/admin/user/vo/user/UserSaveReqVO.java
@@ -23,7 +23,7 @@ public class UserSaveReqVO {
 
     @Schema(description = "用户账号", requiredMode = Schema.RequiredMode.REQUIRED, example = "yudao")
     @NotBlank(message = "用户账号不能为空")
-    @Pattern(regexp = "^[a-zA-Z0-9]+$", message = "用户账号由 数字、字母 组成")
+    @Pattern(regexp = "^[a-zA-Z0-9]{4,30}$", message = "用户账号由 数字、字母 组成")
     @Size(min = 4, max = 30, message = "用户账号长度为 4-30 个字符")
     @DiffLogField(name = "用户账号")
     private String username;