diff --git a/handlers/send_group_msg.go b/handlers/send_group_msg.go
index ac5508c9..696ff3a6 100644
--- a/handlers/send_group_msg.go
+++ b/handlers/send_group_msg.go
@@ -102,7 +102,7 @@ func HandleSendGroupMsg(client callapi.Client, api openapi.OpenAPI, apiv2 openap
 		idInt64, err = idmap.GenerateRowID(message.Params.GroupID.(string), 9)
 		// 临时的
 		msgType = "group"
-	} else if len(message.Params.UserID.(string)) == 32 {
+	} else if message.Params.UserID != nil && len(message.Params.UserID.(string)) == 32 {
 		idInt64, err = idmap.GenerateRowID(message.Params.UserID.(string), 9)
 		// 临时的
 		msgType = "group_private"
diff --git a/handlers/send_group_msg_raw.go b/handlers/send_group_msg_raw.go
index 5f91a6f7..601e0038 100644
--- a/handlers/send_group_msg_raw.go
+++ b/handlers/send_group_msg_raw.go
@@ -87,7 +87,7 @@ func HandleSendGroupMsgRaw(client callapi.Client, api openapi.OpenAPI, apiv2 ope
 		idInt64, err = idmap.GenerateRowID(message.Params.GroupID.(string), 9)
 		// 临时的
 		msgType = "group"
-	} else if len(message.Params.UserID.(string)) == 32 {
+	} else if message.Params.UserID != nil && len(message.Params.UserID.(string)) == 32 {
 		idInt64, err = idmap.GenerateRowID(message.Params.UserID.(string), 9)
 		// 临时的
 		msgType = "group_private"
diff --git a/handlers/send_private_msg.go b/handlers/send_private_msg.go
index b33a9005..fb929d93 100644
--- a/handlers/send_private_msg.go
+++ b/handlers/send_private_msg.go
@@ -81,7 +81,7 @@ func HandleSendPrivateMsg(client callapi.Client, api openapi.OpenAPI, apiv2 open
 	var idInt64 int64
 	var err error
 
-	if len(message.Params.UserID.(string)) == 32 {
+	if message.Params.UserID != nil && len(message.Params.UserID.(string)) == 32 {
 		idInt64, err = idmap.GenerateRowID(message.Params.UserID.(string), 9)
 		// 临时的
 		msgType = "group_private"