diff --git a/ClientTester/EchoClientTester/Packet/PacketBody.cs b/ClientTester/EchoClientTester/Packet/PacketBody.cs
index 80a343d..4ccef36 100644
--- a/ClientTester/EchoClientTester/Packet/PacketBody.cs
+++ b/ClientTester/EchoClientTester/Packet/PacketBody.cs
@@ -523,16 +523,12 @@ public class DamagePacket
 public enum PartyUpdateType
 {
     CREATE,
-    DELETE
-}
-
-public enum UserPartyUpdateType
-{
+    DELETE,
     JOIN,
     LEAVE
 }
 
-// UPDATE_PARTY
+// UPDATE_PARTY - 파티 생성/삭제: LeaderId 사용 / 파티원 추가/제거: PlayerId 사용
 [ProtoContract]
 public class UpdatePartyPacket
 {
@@ -556,30 +552,18 @@ public class UpdatePartyPacket
         get;
         set;
     }
-}
 
-// UPDATE_USER_PARTY
-[ProtoContract]
-public class UpdateUserPartyPacket
-{
-    [ProtoMember(1)]
-    public int PartyId
-    {
-        get;
-        set;
-    }
-
-    [ProtoMember(2)]
+    [ProtoMember(4)]
     public int PlayerId
     {
         get;
         set;
     }
 
-    [ProtoMember(3)]
-    public UserPartyUpdateType Type
+    [ProtoMember(5)]
+    public string PartyName
     {
         get;
         set;
-    }
+    } // CREATE일 때 사용
 }
diff --git a/ClientTester/EchoClientTester/Packet/PacketHeader.cs b/ClientTester/EchoClientTester/Packet/PacketHeader.cs
index 1617c8f..c77f763 100644
--- a/ClientTester/EchoClientTester/Packet/PacketHeader.cs
+++ b/ClientTester/EchoClientTester/Packet/PacketHeader.cs
@@ -48,11 +48,8 @@ public enum PacketCode : ushort
     // 데미지 UI 전달 (서버 -> 클라)
     DAMAGE,
 
-    // 파티 (생성, 삭제)
-    UPDATE_PARTY,
-
-    // 파티 유저 업데이트(추가 삭제)
-    UPDATE_USER_PARTY
+    // 파티 생성/삭제, 파티원 추가/제거 (서버 -> 클라)
+    UPDATE_PARTY
 }
 
 public class PacketHeader
diff --git a/MMOTestServer/MMOserver/Packet/PacketBody.cs b/MMOTestServer/MMOserver/Packet/PacketBody.cs
index a3440a7..65d3c3b 100644
--- a/MMOTestServer/MMOserver/Packet/PacketBody.cs
+++ b/MMOTestServer/MMOserver/Packet/PacketBody.cs
@@ -523,16 +523,12 @@ public class DamagePacket
 public enum PartyUpdateType
 {
     CREATE,
-    DELETE
-}
-
-public enum UserPartyUpdateType
-{
+    DELETE,
     JOIN,
     LEAVE
 }
 
-// UPDATE_PARTY
+// UPDATE_PARTY - 파티 생성/삭제: LeaderId 사용 / 파티원 추가/제거: PlayerId 사용
 [ProtoContract]
 public class UpdatePartyPacket
 {
@@ -556,30 +552,18 @@ public class UpdatePartyPacket
         get;
         set;
     }
-}
 
-// UPDATE_USER_PARTY
-[ProtoContract]
-public class UpdateUserPartyPacket
-{
-    [ProtoMember(1)]
-    public int PartyId
-    {
-        get;
-        set;
-    }
-
-    [ProtoMember(2)]
+    [ProtoMember(4)]
     public int PlayerId
     {
         get;
         set;
     }
 
-    [ProtoMember(3)]
-    public UserPartyUpdateType Type
+    [ProtoMember(5)]
+    public string PartyName
     {
         get;
         set;
-    }
+    } // CREATE일 때 사용
 }
diff --git a/MMOTestServer/MMOserver/Packet/PacketHeader.cs b/MMOTestServer/MMOserver/Packet/PacketHeader.cs
index 204d965..3862e26 100644
--- a/MMOTestServer/MMOserver/Packet/PacketHeader.cs
+++ b/MMOTestServer/MMOserver/Packet/PacketHeader.cs
@@ -48,11 +48,8 @@ public enum PacketCode : ushort
     // 데미지 UI 전달 (서버 -> 클라)
     DAMAGE,
 
-    // 파티 (생성, 삭제)
-    UPDATE_PARTY,
-
-    // 파티 유저 업데이트(추가 삭제)
-    UPDATE_USER_PARTY
+    // 파티 생성/삭제, 파티원 추가/제거 (서버 -> 클라)
+    UPDATE_PARTY
 }
 
 public class PacketHeader