diff --git a/authcollection.go b/authcollection.go
index c1e688a..bf62a6f 100644
--- a/authcollection.go
+++ b/authcollection.go
@@ -20,7 +20,6 @@ import (
 
 type Authinfo struct {
 	Accid        primitive.ObjectID `bson:"_id,omitempty" json:"_id,omitempty"`
-	ServiceCode  string             `bson:"code" json:"code"`
 	Platform     string
 	Uid          string
 	Email        string