diff --git a/Assets/Scripts/Studio/Connect/StudioService.cs b/Assets/Scripts/Studio/Connect/StudioService.cs
index d806c2b5..a4bc94ad 100644
--- a/Assets/Scripts/Studio/Connect/StudioService.cs
+++ b/Assets/Scripts/Studio/Connect/StudioService.cs
@@ -4,6 +4,8 @@ using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using UnityEngine;
+using Studio;
+using Studio.Core;
 
 namespace Studio
 {
@@ -19,16 +21,21 @@ namespace Studio
         }
     }
 
-    public class StudioService
+    public class StudioService : UnitySingleton<StudioService>
     {
         #region Singleton
-        private static readonly StudioService instance = new StudioService(new StudioRepoistory());
-        public static StudioService Instance => instance;
-        static StudioService() { }
+
         #endregion
 
         private Dictionary<string, Dictionary<string, EventHandler<StudioServiceTypeEventArgs>>> listenerIdMap;
         private StudioRepoistory repository;
+        public bool isConnected
+        {
+            get
+            {
+                return repository.isConnected;
+            }
+        }
         private Dictionary<string, float> updateTime = new();
         private int totalRequestPacket;
         private int totalResponsePacket;
@@ -43,11 +50,14 @@ namespace Studio
 
         public Dictionary<string, StudioEntityWithState<object>> apiData = new();
         public Dictionary<string, (Dictionary<string, Dictionary<string, string>>, TimeSpan)> mqttData = new();
+
         private Dictionary<string, DateTime> lastUpdateTime = new();
 
         public event Action<string, StudioEntityWithState<object>> onAPIDataLoaded;
         public event Action<string, Dictionary<string, Dictionary<string, string>>, TimeSpan> onMQTTDataLoaded;
 
+        bool isMQTTConnected;
+
         //private string 
         private StudioService(StudioRepoistory repository)
         {
@@ -59,7 +69,15 @@ namespace Studio
         }
         public void ConnectMQTT()
         {
+            if (isMQTTConnected)
+                return;
+
+            this.repository = new StudioRepoistory();
+            listenerIdMap = new Dictionary<string, Dictionary<string, EventHandler<StudioServiceTypeEventArgs>>>();
+
+            repository.OnTopicList += OnTopicList;
             repository.MQTTConnect();
+            isMQTTConnected = true;
         }
 
         public void SubscribeMQTT(string topic)
@@ -90,6 +108,15 @@ namespace Studio
                 UpdateTopicData(type, idKey.Key, idKey.Value);
             }
 
+            if (!mqttData.ContainsKey(type))
+            {
+                mqttData.Add(type, (entities, elapsedTime));
+            }
+            else
+            {
+                mqttData[type] = (entities, elapsedTime);
+            }
+
             onMQTTDataLoaded?.Invoke(type, entities, elapsedTime); // 나중에 클래스 밖으로 이동 필요
         }
 
diff --git a/Assets/Scripts/Studio/UI/Elements/UI_APIConnection.cs b/Assets/Scripts/Studio/UI/Elements/UI_APIConnection.cs
index 49bf013a..4a9e9d66 100644
--- a/Assets/Scripts/Studio/UI/Elements/UI_APIConnection.cs
+++ b/Assets/Scripts/Studio/UI/Elements/UI_APIConnection.cs
@@ -59,10 +59,10 @@ namespace Studio
             foreach (UI_InputURLItem item in inputURLItems)
             {
                 string url = "/api/" + item.InputField_URL.text;
-                await StudioService.Instance.LoadBaseData(url);
+                await StudioService.instance.LoadBaseData(url);
 
-                panel_DataRepository = FindAnyObjectByType<Panel_DataRepository>(FindObjectsInactive.Include);
-                panel_DataRepository.apiConnected = true;
+                //panel_DataRepository = FindAnyObjectByType<Panel_DataRepository>(FindObjectsInactive.Include);
+                //panel_DataRepository.apiConnected = true;
             }
         }
         private void OnClickRemoveItemButton()
diff --git a/Assets/Scripts/Studio/UI/Elements/UI_MQTTConnection.cs b/Assets/Scripts/Studio/UI/Elements/UI_MQTTConnection.cs
index 54aa5c3c..3d8da205 100644
--- a/Assets/Scripts/Studio/UI/Elements/UI_MQTTConnection.cs
+++ b/Assets/Scripts/Studio/UI/Elements/UI_MQTTConnection.cs
@@ -55,10 +55,10 @@ namespace Studio
 
             foreach (UI_InputTopicItem item in inputTopicItems)
             {
-                StudioService.Instance.SubscribeMQTT(item.InputField_Topic.text);
+                StudioService.instance.SubscribeMQTT(item.InputField_Topic.text);
 
-                panel_DataRepository = FindAnyObjectByType<Panel_DataRepository>(FindObjectsInactive.Include);
-                panel_DataRepository.mqttConnected = true;
+                //panel_DataRepository = FindAnyObjectByType<Panel_DataRepository>(FindObjectsInactive.Include);
+                //panel_DataRepository.mqttConnected = true;
             }
         }
         private void OnClickRemoveItemButton()
diff --git a/Assets/TMPFolder/Panel_DataRepository.cs b/Assets/TMPFolder/Panel_DataRepository.cs
index d3e36cc8..7fcc85e4 100644
--- a/Assets/TMPFolder/Panel_DataRepository.cs
+++ b/Assets/TMPFolder/Panel_DataRepository.cs
@@ -42,8 +42,8 @@ namespace Studio
         Dictionary<string, UI_BaseDataButton> apiButtons = new();
         Dictionary<string, UI_MQTTDataButton> mqttButtons = new();
 
-        public bool apiConnected;
-        public bool mqttConnected;
+        //public bool apiConnected;
+        //public bool mqttConnected;
 
         public override void AfterAwake()
         {
@@ -64,12 +64,13 @@ namespace Studio
         private void OnEnable()
         {
             gameObject.transform.SetAsLastSibling();
-            
-            StudioService studioService = StudioService.Instance;
+
+            StudioService studioService = StudioService.instance;
 
             studioService.onAPIDataLoaded += UpdateAPIDataButton;
             studioService.onMQTTDataLoaded += UpdateMQTTDataButton;
 
+            /*
             foreach (string key in studioService.apiData.Keys)
             {
                 UpdateAPIDataButton(key, studioService.apiData[key]);
@@ -79,6 +80,7 @@ namespace Studio
             {
                 UpdateMQTTDataButton(key, studioService.mqttData[key].Item1, studioService.mqttData[key].Item2);
             }
+            */
             /*
             if (apiConnected)
             {
@@ -159,7 +161,7 @@ namespace Studio
 
         public void ShowInformation_API()
         {
-            APITotalBoardEntity info = StudioService.Instance.GetAPIStatusBoarder();
+            APITotalBoardEntity info = StudioService.instance.GetAPIStatusBoarder();
 
             TotalRequestPacketSize.text = info.TotalRequestPacketSize.ToString();
             AverageRequestPacketSize.text = info.AverageRequestPacketSize.ToString();
diff --git a/Assets/TMPFolder/RJHTest.cs b/Assets/TMPFolder/RJHTest.cs
index 97e73f0e..123c87ab 100644
--- a/Assets/TMPFolder/RJHTest.cs
+++ b/Assets/TMPFolder/RJHTest.cs
@@ -16,14 +16,14 @@ namespace Studio
             Constants.APIDomain = "220.90.135.190";
             Constants.APIPort = 23000;
             Constants.MQTTPort = 8088;
-            StudioService.Instance.ConnectMQTT();
+            StudioService.instance.ConnectMQTT();
         }
 
         private async void Test()
         {
             await AuthService.Instance.Login("xr", "@dbqlTl1");
 
-            await StudioService.Instance.LoadBaseData("/api/agv");
+            await StudioService.instance.LoadBaseData("/api/agv");
             Debug.Log(AuthService.Instance.Entiti.accessToken);
         }
         private void Update()
@@ -34,12 +34,12 @@ namespace Studio
             }
             if (Input.GetKeyDown(KeyCode.I))
             {
-                StudioService.Instance.SubscribeMQTT("STOCKER_CRANE");
+                StudioService.instance.SubscribeMQTT("STOCKER_CRANE");
 
             }
             if(Input.GetKeyDown(KeyCode.U))
             {
-                StudioService.Instance.SubscribeMQTT("AGV");
+                StudioService.instance.SubscribeMQTT("AGV");
             }
             if(Input.GetKeyDown(KeyCode.T))
             {
diff --git a/Assets/TMPFolder/UILinkedList.cs b/Assets/TMPFolder/UILinkedList.cs
index 22f16d2c..56196e98 100644
--- a/Assets/TMPFolder/UILinkedList.cs
+++ b/Assets/TMPFolder/UILinkedList.cs
@@ -26,7 +26,7 @@ namespace Studio
         private void SetItem()
         {
             var apiItem = CreateAccordion();
-            var basedatas = StudioService.Instance.apiData;
+            var basedatas = StudioService.instance.apiData;
             foreach(var data in basedatas)
             {
                 CreateTabButton(data.Key, apiItem.BarList);