diff --git a/idp/dingtalk.go b/idp/dingtalk.go
index d17e69fc..297f78d4 100644
--- a/idp/dingtalk.go
+++ b/idp/dingtalk.go
@@ -121,6 +121,7 @@ func (idp *DingTalkIdProvider) GetToken(code string) (*oauth2.Token, error) {
 type DingTalkUserResponse struct {
 	Nick      string `json:"nick"`
 	OpenId    string `json:"openId"`
+	UnionId   string `json:"unionId"`
 	AvatarUrl string `json:"avatarUrl"`
 	Email     string `json:"email"`
 	Errmsg    string `json:"message"`
@@ -162,6 +163,7 @@ func (idp *DingTalkIdProvider) GetUserInfo(token *oauth2.Token) (*UserInfo, erro
 		Id:          dtUserInfo.OpenId,
 		Username:    dtUserInfo.Nick,
 		DisplayName: dtUserInfo.Nick,
+		UnionId:     dtUserInfo.UnionId,
 		Email:       dtUserInfo.Email,
 		AvatarUrl:   dtUserInfo.AvatarUrl,
 	}
diff --git a/idp/provider.go b/idp/provider.go
index 55838a2a..d50e39ba 100644
--- a/idp/provider.go
+++ b/idp/provider.go
@@ -25,6 +25,7 @@ type UserInfo struct {
 	Id          string
 	Username    string
 	DisplayName string
+	UnionId     string
 	Email       string
 	AvatarUrl   string
 }
diff --git a/object/user_util.go b/object/user_util.go
index 3dcc3c0f..6a34149c 100644
--- a/object/user_util.go
+++ b/object/user_util.go
@@ -137,6 +137,15 @@ func SetUserOAuthProperties(organization *Organization, user *User, providerType
 			user.Email = userInfo.Email
 		}
 	}
+
+	if userInfo.UnionId != "" {
+		propertyName := fmt.Sprintf("oauth_%s_unionId", providerType)
+		setUserProperty(user, propertyName, userInfo.UnionId)
+		if providerType == "DingTalk" && user.DingTalk == "" {
+			user.DingTalk = userInfo.UnionId
+		}
+	}
+
 	if userInfo.AvatarUrl != "" {
 		propertyName := fmt.Sprintf("oauth_%s_avatarUrl", providerType)
 		setUserProperty(user, propertyName, userInfo.AvatarUrl)