diff --git a/Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Domain/Entities/Chat/SessionAggregateRoot.cs b/Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Domain/Entities/Chat/SessionAggregateRoot.cs
index b7fabf4e..8a25d8da 100644
--- a/Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Domain/Entities/Chat/SessionAggregateRoot.cs
+++ b/Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Domain/Entities/Chat/SessionAggregateRoot.cs
@@ -9,6 +9,8 @@ public class SessionAggregateRoot : FullAuditedAggregateRoot<Guid>
 {
     public Guid UserId { get; set; }
     public string SessionTitle { get; set; }
+    
+    [SugarColumn(ColumnDataType = StaticConfig.CodeFirst_BigString)]
     public string SessionContent { get; set; }
     public string? Remark { get; set; }
 }
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