diff --git a/controllers/user.go b/controllers/user.go
index c6bc13b0..8c273810 100644
--- a/controllers/user.go
+++ b/controllers/user.go
@@ -160,35 +160,47 @@ func (c *ApiController) GetUser() {
 		id = util.GetId(userFromUserId.Owner, userFromUserId.Name)
 	}
 
-	if owner == "" {
-		owner = util.GetOwnerFromId(id)
-	}
+	var user *object.User
 
-	organization, err := object.GetOrganization(util.GetId("admin", owner))
-	if err != nil {
-		c.ResponseError(err.Error())
-		return
-	}
+	if id == "" && owner == "" {
+		switch {
+		case email != "":
+			user, err = object.GetUserByEmailOnly(email)
+		case phone != "":
+			user, err = object.GetUserByPhoneOnly(phone)
+		case userId != "":
+			user, err = object.GetUserByUserIdOnly(userId)
+		}
+	} else {
+		if owner == "" {
+			owner = util.GetOwnerFromId(id)
+		}
 
-	if !organization.IsProfilePublic {
-		requestUserId := c.GetSessionUsername()
-		hasPermission, err := object.CheckUserPermission(requestUserId, id, false, c.GetAcceptLanguage())
-		if !hasPermission {
+		organization, err := object.GetOrganization(util.GetId("admin", owner))
+		if err != nil {
 			c.ResponseError(err.Error())
 			return
 		}
-	}
 
-	var user *object.User
-	switch {
-	case email != "":
-		user, err = object.GetUserByEmail(owner, email)
-	case phone != "":
-		user, err = object.GetUserByPhone(owner, phone)
-	case userId != "":
-		user = userFromUserId
-	default:
-		user, err = object.GetUser(id)
+		if !organization.IsProfilePublic {
+			requestUserId := c.GetSessionUsername()
+			hasPermission, err := object.CheckUserPermission(requestUserId, id, false, c.GetAcceptLanguage())
+			if !hasPermission {
+				c.ResponseError(err.Error())
+				return
+			}
+		}
+
+		switch {
+		case email != "":
+			user, err = object.GetUserByEmail(owner, email)
+		case phone != "":
+			user, err = object.GetUserByPhone(owner, phone)
+		case userId != "":
+			user = userFromUserId
+		default:
+			user, err = object.GetUser(id)
+		}
 	}
 
 	if err != nil {
diff --git a/object/user.go b/object/user.go
index 78dbcbd7..37564423 100644
--- a/object/user.go
+++ b/object/user.go
@@ -372,6 +372,24 @@ func GetUserByEmail(owner string, email string) (*User, error) {
 	}
 }
 
+func GetUserByEmailOnly(email string) (*User, error) {
+	if email == "" {
+		return nil, nil
+	}
+
+	user := User{Email: email}
+	existed, err := ormer.Engine.Get(&user)
+	if err != nil {
+		return nil, err
+	}
+
+	if existed {
+		return &user, nil
+	} else {
+		return nil, nil
+	}
+}
+
 func GetUserByPhone(owner string, phone string) (*User, error) {
 	if owner == "" || phone == "" {
 		return nil, nil
@@ -390,6 +408,24 @@ func GetUserByPhone(owner string, phone string) (*User, error) {
 	}
 }
 
+func GetUserByPhoneOnly(phone string) (*User, error) {
+	if phone == "" {
+		return nil, nil
+	}
+
+	user := User{Phone: phone}
+	existed, err := ormer.Engine.Get(&user)
+	if err != nil {
+		return nil, err
+	}
+
+	if existed {
+		return &user, nil
+	} else {
+		return nil, nil
+	}
+}
+
 func GetUserByUserId(owner string, userId string) (*User, error) {
 	if owner == "" || userId == "" {
 		return nil, nil