diff --git a/ZR.Model/System/Dto/SysUserDto.cs b/ZR.Model/System/Dto/SysUserDto.cs
index d8ba37a..2dc0b95 100644
--- a/ZR.Model/System/Dto/SysUserDto.cs
+++ b/ZR.Model/System/Dto/SysUserDto.cs
@@ -18,7 +18,7 @@ namespace ZR.Model.System.Dto
 
     public class SysUserQueryDto
     {
-        public long UserId { get; set; }
+        public long? UserId { get; set; }
         public string UserName { get; set; }
         public string NickName { get; set; }
         public string Email { get; set; }
diff --git a/ZR.Service/System/SysUserService.cs b/ZR.Service/System/SysUserService.cs
index ee874d4..ff31d26 100644
--- a/ZR.Service/System/SysUserService.cs
+++ b/ZR.Service/System/SysUserService.cs
@@ -43,6 +43,7 @@ namespace ZR.Service
         {
             var exp = Expressionable.Create<SysUser>();
             exp.AndIF(!string.IsNullOrEmpty(user.UserName), u => u.UserName.Contains(user.UserName));
+            exp.AndIF(user.UserId > 0, u => u.UserId == user.UserId);
             exp.AndIF(user.Status != -1, u => u.Status == user.Status);
             exp.AndIF(user.BeginTime != DateTime.MinValue && user.BeginTime != null, u => u.Create_time >= user.BeginTime);
             exp.AndIF(user.EndTime != DateTime.MinValue && user.EndTime != null, u => u.Create_time <= user.EndTime);