diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index c2ebbae..5c70c25 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -4,9 +4,9 @@
     <option name="autoReloadType" value="ALL" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="3fefb2c4-b6f9-466b-a523-53352e8d6f95" name="更改" comment=":bug: Hotfix previous commit compile issue">
+    <list default="true" id="3fefb2c4-b6f9-466b-a523-53352e8d6f95" name="更改" comment=":sparkles: Add realm member support both account name and id">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/http/api/realm_members_api.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/http/api/realm_members_api.go" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/pkg/internal/services/realms.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/services/realms.go" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -159,7 +159,6 @@
   </component>
   <component name="VcsManagerConfiguration">
     <option name="CHECK_CODE_SMELLS_BEFORE_PROJECT_COMMIT" value="false" />
-    <MESSAGE value=":sparkles: Authkit support check user related permission" />
     <MESSAGE value=":sparkles: Authkit can get user" />
     <MESSAGE value=":bug: Fix auth cache" />
     <MESSAGE value=":sparkles: Allow get realm by numeric auto increment id" />
@@ -184,7 +183,8 @@
     <MESSAGE value=":truck: Move make friendship api" />
     <MESSAGE value=":boom: Move remove member api arguments from body to querystring just as messaging" />
     <MESSAGE value=":bug: Hotfix previous commit compile issue" />
-    <option name="LAST_COMMIT_MESSAGE" value=":bug: Hotfix previous commit compile issue" />
+    <MESSAGE value=":sparkles: Add realm member support both account name and id" />
+    <option name="LAST_COMMIT_MESSAGE" value=":sparkles: Add realm member support both account name and id" />
     <option name="GROUP_MULTIFILE_MERGE_BY_DIRECTORY" value="true" />
   </component>
   <component name="VgoProject">
diff --git a/pkg/internal/services/realms.go b/pkg/internal/services/realms.go
index d16b8a3..176927a 100644
--- a/pkg/internal/services/realms.go
+++ b/pkg/internal/services/realms.go
@@ -1,10 +1,12 @@
 package services
 
 import (
+	"errors"
 	"fmt"
 	"git.solsynth.dev/hypernet/passport/pkg/authkit/models"
 	"git.solsynth.dev/hypernet/passport/pkg/internal/database"
 	"github.com/samber/lo"
+	"gorm.io/gorm"
 	"strconv"
 )
 
@@ -97,6 +99,14 @@ func GetRealmMember(userId uint, realmId uint) (models.RealmMember, error) {
 }
 
 func AddRealmMember(user models.Account, affected models.Account, target models.Realm) error {
+	var member models.RealmMember
+	if err := database.C.Where(&models.RealmMember{
+		AccountID: affected.ID,
+		RealmID:   target.ID,
+	}).First(&member).Error; err == nil || errors.Is(err, gorm.ErrRecordNotFound) {
+		return fmt.Errorf("the user is already in the realm")
+	}
+
 	if !target.IsPublic && !target.IsCommunity {
 		if member, err := GetRealmMember(user.ID, target.ID); err != nil {
 			return fmt.Errorf("only realm member can add people: %v", err)
@@ -114,7 +124,7 @@ func AddRealmMember(user models.Account, affected models.Account, target models.
 		}
 	}
 
-	member := models.RealmMember{
+	member = models.RealmMember{
 		RealmID:   target.ID,
 		AccountID: affected.ID,
 	}