diff --git a/Admin.NET/Admin.NET.Core/Ai/Entity/LLMChatSummaryHistory.cs b/Admin.NET/Admin.NET.Core/Ai/Entity/LLMChatSummaryHistory.cs
index b6eb8c8c..4aed0721 100644
--- a/Admin.NET/Admin.NET.Core/Ai/Entity/LLMChatSummaryHistory.cs
+++ b/Admin.NET/Admin.NET.Core/Ai/Entity/LLMChatSummaryHistory.cs
@@ -29,7 +29,8 @@ public class LLMChatSummaryHistory : EntityBaseId
     /// <summary>
     /// 摘要
     /// </summary>
-    [SugarColumn(ColumnDescription = "摘要", ColumnDataType = StaticConfig.CodeFirst_BigString)]
+    [SugarColumn(ColumnDescription = "摘要", Length = 1024)]
+    [MaxLength(1024)]
     public string? Summary { get; set; }
 
     /// <summary>