diff --git a/dto/message_reaction.go b/dto/message_reaction.go
index 0ea7382..566dc6e 100644
--- a/dto/message_reaction.go
+++ b/dto/message_reaction.go
@@ -1,7 +1,7 @@
 package dto
 
 // ReactionTargetType 表情表态对象类型
-type ReactionTargetType = int32
+type ReactionTargetType = string
 
 const (
 	// ReactionTargetTypeMsg 消息