diff --git a/ClientTester/EchoClientTester/Packet/PacketBody.cs b/ClientTester/EchoClientTester/Packet/PacketBody.cs
index 1cce4cc..4c133df 100644
--- a/ClientTester/EchoClientTester/Packet/PacketBody.cs
+++ b/ClientTester/EchoClientTester/Packet/PacketBody.cs
@@ -528,7 +528,33 @@ public enum PartyUpdateType
     LEAVE
 }
 
-// UPDATE_PARTY - 파티 생성/삭제: LeaderId 사용 / 파티원 추가/제거: PlayerId 사용
+// REQUEST_PARTY (클라 -> 서버) - CREATE: PartyName 사용 / JOIN·LEAVE·DELETE: PartyId 사용
+[ProtoContract]
+public class RequestPartyPacket
+{
+    [ProtoMember(1)]
+    public PartyUpdateType Type
+    {
+        get;
+        set;
+    }
+
+    [ProtoMember(2)]
+    public long PartyId
+    {
+        get;
+        set;
+    } // JOIN, LEAVE, DELETE 시 사용
+
+    [ProtoMember(3)]
+    public string PartyName
+    {
+        get;
+        set;
+    } // CREATE 시 사용
+}
+
+// UPDATE_PARTY (서버 -> 클라) - 파티 생성/삭제: LeaderId 사용 / 파티원 추가/제거: PlayerId 사용
 [ProtoContract]
 public class UpdatePartyPacket
 {
diff --git a/ClientTester/EchoClientTester/Packet/PacketHeader.cs b/ClientTester/EchoClientTester/Packet/PacketHeader.cs
index c77f763..886af11 100644
--- a/ClientTester/EchoClientTester/Packet/PacketHeader.cs
+++ b/ClientTester/EchoClientTester/Packet/PacketHeader.cs
@@ -49,7 +49,10 @@ public enum PacketCode : ushort
     DAMAGE,
 
     // 파티 생성/삭제, 파티원 추가/제거 (서버 -> 클라)
-    UPDATE_PARTY
+    UPDATE_PARTY,
+
+    // 파티 참가/탈퇴/생성/해산 요청 (클라 -> 서버)
+    REQUEST_PARTY
 }
 
 public class PacketHeader
diff --git a/MMOTestServer/MMOserver/Packet/PacketBody.cs b/MMOTestServer/MMOserver/Packet/PacketBody.cs
index 7f4199f..17bf30e 100644
--- a/MMOTestServer/MMOserver/Packet/PacketBody.cs
+++ b/MMOTestServer/MMOserver/Packet/PacketBody.cs
@@ -528,7 +528,33 @@ public enum PartyUpdateType
     LEAVE
 }
 
-// UPDATE_PARTY - 파티 생성/삭제: LeaderId 사용 / 파티원 추가/제거: PlayerId 사용
+// REQUEST_PARTY (클라 -> 서버) - CREATE: PartyName 사용 / JOIN·LEAVE·DELETE: PartyId 사용
+[ProtoContract]
+public class RequestPartyPacket
+{
+    [ProtoMember(1)]
+    public PartyUpdateType Type
+    {
+        get;
+        set;
+    }
+
+    [ProtoMember(2)]
+    public long PartyId
+    {
+        get;
+        set;
+    } // JOIN, LEAVE, DELETE 시 사용
+
+    [ProtoMember(3)]
+    public string PartyName
+    {
+        get;
+        set;
+    } // CREATE 시 사용
+}
+
+// UPDATE_PARTY (서버 -> 클라) - 파티 생성/삭제: LeaderId 사용 / 파티원 추가/제거: PlayerId 사용
 [ProtoContract]
 public class UpdatePartyPacket
 {
diff --git a/MMOTestServer/MMOserver/Packet/PacketHeader.cs b/MMOTestServer/MMOserver/Packet/PacketHeader.cs
index 3862e26..8f24111 100644
--- a/MMOTestServer/MMOserver/Packet/PacketHeader.cs
+++ b/MMOTestServer/MMOserver/Packet/PacketHeader.cs
@@ -49,7 +49,10 @@ public enum PacketCode : ushort
     DAMAGE,
 
     // 파티 생성/삭제, 파티원 추가/제거 (서버 -> 클라)
-    UPDATE_PARTY
+    UPDATE_PARTY,
+
+    // 파티 참가/탈퇴/생성/해산 요청 (클라 -> 서버)
+    REQUEST_PARTY
 }
 
 public class PacketHeader