diff --git a/im-center-server/src/main/java/cn/axzo/im/entity/Group.java b/im-center-server/src/main/java/cn/axzo/im/entity/Group.java
index a75e594..c4bb718 100644
--- a/im-center-server/src/main/java/cn/axzo/im/entity/Group.java
+++ b/im-center-server/src/main/java/cn/axzo/im/entity/Group.java
@@ -29,6 +29,7 @@ public class Group {
     private String name;
     private String bizCode;
     private GroupType type;
+    @TableField(typeHandler = FastjsonTypeHandler.class)
     private Map<String, Object> bizGroupInfo;
     private String avatar;
     private Long memberCount;