diff --git a/pkg/common/db/model_struct.go b/pkg/common/db/model_struct.go
index 7023996d7..ce52a0e70 100644
--- a/pkg/common/db/model_struct.go
+++ b/pkg/common/db/model_struct.go
@@ -235,7 +235,7 @@ type ChatLog struct {
 	SessionType      int32     `gorm:"column:session_type;index:session_type" json:"sessionType"`
 	MsgFrom          int32     `gorm:"column:msg_from" json:"msgFrom"`
 	ContentType      int32     `gorm:"column:content_type;index:content_type" json:"contentType"`
-	Content          string    `gorm:"column:content;type:varchar(3000);index:search" json:"content"`
+	Content          string    `gorm:"column:content;type:varchar(3000)" json:"content"`
 	Status           int32     `gorm:"column:status" json:"status"`
 	SendTime         time.Time `gorm:"column:send_time;index:sendTime" json:"sendTime"`
 	CreateTime       time.Time `gorm:"column:create_time" json:"createTime"`