diff --git a/src/ST.Services.CloudService.Models/Models/ExternalTransaction/RankingResponse.cs b/src/ST.Services.CloudService.Models/Models/ExternalTransaction/RankingResponse.cs
index 95f3eeb10..31b83f9fc 100644
--- a/src/ST.Services.CloudService.Models/Models/ExternalTransaction/RankingResponse.cs
+++ b/src/ST.Services.CloudService.Models/Models/ExternalTransaction/RankingResponse.cs
@@ -28,8 +28,7 @@ namespace System.Application.Models
         [MPKey(1)]
         [N_JsonProperty("1")]
         [S_JsonProperty("1")]
-        public Guid Avatar { get; set; }
-
+        public string? Avatar { get; set; } = string.Empty;
         /// <summary>
         /// 赞助月份
         /// </summary>