diff --git a/src/main/java/com/project/information/domain/entity/KnowledgeClusterEntity.java b/src/main/java/com/project/information/domain/entity/KnowledgeClusterEntity.java
index d3079b0..22a6203 100644
--- a/src/main/java/com/project/information/domain/entity/KnowledgeClusterEntity.java
+++ b/src/main/java/com/project/information/domain/entity/KnowledgeClusterEntity.java
@@ -28,7 +28,7 @@ public class KnowledgeClusterEntity extends BaseEntity {
     @Comment("资料id")
     private Long informationId;
 
-    @Column(name = "cluster_topic", length = 2000)
+    @Column(name = "cluster_topic", columnDefinition = "TEXT")
     @Comment("簇主题/标签（由AI聚类后总结提取）")
     @TableField("cluster_topic")
     private String clusterTopic;
diff --git a/src/main/java/com/project/question/domain/entity/TaskKnowledgeClusterEntity.java b/src/main/java/com/project/question/domain/entity/TaskKnowledgeClusterEntity.java
index c33a975..c99afda 100644
--- a/src/main/java/com/project/question/domain/entity/TaskKnowledgeClusterEntity.java
+++ b/src/main/java/com/project/question/domain/entity/TaskKnowledgeClusterEntity.java
@@ -32,7 +32,7 @@ public class TaskKnowledgeClusterEntity extends BaseEntity {
     @Comment("资料id")
     private Long informationId;
 
-    @Column(name = "cluster_topic", length = 2000)
+    @Column(name = "cluster_topic", columnDefinition = "TEXT")
     @Comment("簇主题/标签（由AI聚类后总结提取）")
     @TableField("cluster_topic")
     private String clusterTopic;