diff --git a/pkg/common/db/model_struct.go b/pkg/common/db/model_struct.go
index 25e3bf0cd..0e36add1f 100644
--- a/pkg/common/db/model_struct.go
+++ b/pkg/common/db/model_struct.go
@@ -181,7 +181,7 @@ type ChatLog struct {
 	SessionType      int32     `gorm:"column:session_type" json:"sessionType"`
 	MsgFrom          int32     `gorm:"column:msg_from" json:"msgFrom"`
 	ContentType      int32     `gorm:"column:content_type" json:"contentType"`
-	Content          string    `gorm:"column:content;type:varchar(1000)" json:"content"`
+	Content          []byte    `gorm:"column:content;type:varchar(1000)" json:"content"`
 	Status           int32     `gorm:"column:status" json:"status"`
 	Seq              uint32    `gorm:"column:seq;index:index_seq;default:0" json:"seq"`
 	SendTime         time.Time `gorm:"column:send_time" json:"sendTime"`
diff --git a/pkg/common/db/mysql_model/im_mysql_msg_model/chat_log_model.go b/pkg/common/db/mysql_model/im_mysql_msg_model/chat_log_model.go
index 96d03a7c7..cea33b1a2 100644
--- a/pkg/common/db/mysql_model/im_mysql_msg_model/chat_log_model.go
+++ b/pkg/common/db/mysql_model/im_mysql_msg_model/chat_log_model.go
@@ -27,7 +27,7 @@ func InsertMessageToChatLog(msg pbMsg.MsgDataToMQ) error {
 	case constant.SingleChatType:
 		chatLog.RecvID = msg.MsgData.RecvID
 	}
-	chatLog.Content = string(msg.MsgData.Content)
+	chatLog.Content = msg.MsgData.Content
 	chatLog.CreateTime = utils.UnixMillSecondToTime(msg.MsgData.CreateTime)
 	chatLog.SendTime = utils.UnixMillSecondToTime(msg.MsgData.SendTime)
 	return dbConn.Table("chat_logs").Create(chatLog).Error