diff --git a/nekoyume/Assets/_Scripts/Blockchain/ActionManager.cs b/nekoyume/Assets/_Scripts/Blockchain/ActionManager.cs
index 5b54c453bd..643e573fe8 100644
--- a/nekoyume/Assets/_Scripts/Blockchain/ActionManager.cs
+++ b/nekoyume/Assets/_Scripts/Blockchain/ActionManager.cs
@@ -788,15 +788,17 @@ public IObservable<ActionEvaluation<ItemEnhancement>> ItemEnhancement(
                     ["AgentAddress"] = States.Instance.AgentState.address.ToString()
                 }, true);
 
+            var materialEquipmentGuids = materialEquipments.Select((matEquipment) => matEquipment.NonFungibleId).ToList();
             var action = new ItemEnhancement
             {
                 itemId = baseEquipment.NonFungibleId,
-                materialIds = materialEquipments.Select((matEquipment) => matEquipment.NonFungibleId).ToList(),
+                materialIds = materialEquipmentGuids,
                 avatarAddress = avatarAddress,
                 slotIndex = slotIndex,
                 hammers = hammers
             };
             ProcessAction(action);
+            States.Instance.RemoveCurrentItemSlotStates(materialEquipmentGuids);
 
             return _agent.ActionRenderer.EveryRender<ItemEnhancement>()
                 .Timeout(ActionTimeout)
@@ -1178,13 +1180,15 @@ public IObservable<ActionEvaluation<Grinding>> Grinding(
                 ["AgentAddress"] = States.Instance.AgentState.address.ToString()
             }, true);
 
+            var equipmentGuids = equipmentList.Select(i => i.ItemId).ToList();
             var action = new Grinding
             {
                 AvatarAddress = avatarAddress,
-                EquipmentIds = equipmentList.Select(i => i.ItemId).ToList(),
+                EquipmentIds = equipmentGuids,
                 ChargeAp = chargeAp
             };
             ProcessAction(action);
+            States.Instance.RemoveCurrentItemSlotStates(equipmentGuids);
 
             return _agent.ActionRenderer.EveryRender<Grinding>()
                 .Timeout(ActionTimeout)
@@ -1231,11 +1235,7 @@ public IObservable<ActionEvaluation<Synthesize>> Synthesize(
             }
 
             // TODO: If need sentry or airBridge trace, add it.
-
-            var action = new Synthesize
-            {
-                AvatarAddress = avatarAddress,
-                MaterialIds = itemBaseList.Select(i =>
+            var materialGuids = itemBaseList.Select(i =>
                 {
                     return i switch
                     {
@@ -1243,13 +1243,18 @@ public IObservable<ActionEvaluation<Synthesize>> Synthesize(
                         Costume costume => costume.ItemId,
                         _ => throw new InvalidCastException(),
                     };
-                }).ToList(),
+                }).ToList();
+            var action = new Synthesize
+            {
+                AvatarAddress = avatarAddress,
+                MaterialIds = materialGuids,
                 ChargeAp = chargeAp,
                 MaterialGradeId = (int)grade,
                 MaterialItemSubTypeId = (int)itemSubType,
             };
             ProcessAction(action);
-
+            States.Instance.RemoveCurrentItemSlotStates(materialGuids);
+            
             return _agent.ActionRenderer.EveryRender<Synthesize>()
                 .Timeout(ActionTimeout)
                 .Where(eval => eval.Action.Id.Equals(action.Id))
diff --git a/nekoyume/Assets/_Scripts/State/States.cs b/nekoyume/Assets/_Scripts/State/States.cs
index fd135ad23d..5ab365c07e 100644
--- a/nekoyume/Assets/_Scripts/State/States.cs
+++ b/nekoyume/Assets/_Scripts/State/States.cs
@@ -78,6 +78,20 @@ public readonly ConcurrentDictionary<int, Dictionary<BattleType, ItemSlotState>>
         public ConcurrentDictionary<BattleType, RuneSlotState> CurrentRuneSlotStates { get; } = new();
         public ConcurrentDictionary<BattleType, ItemSlotState> CurrentItemSlotStates { get; } = new();
 
+        public void RemoveCurrentItemSlotStates(List<Guid> removeItems)
+        {
+            // removeItems에 있는 아이템을 CurrentItemSlotStates에서 제거합니다.
+            foreach (var item in removeItems)
+            {
+                foreach (var battleType in CurrentItemSlotStates.Keys.ToList())
+                {
+                    var itemSlotState = CurrentItemSlotStates[battleType];
+                    itemSlotState.Equipments.Remove(item);
+                    itemSlotState.Costumes.Remove(item);
+                }
+            }
+        }
+
         private class Workshop
         {
             private readonly ConcurrentDictionary<int, CombinationSlotState> _states = new();
@@ -874,5 +888,7 @@ private void SetClaimedGiftIds(List<int> claimedGiftIds)
         {
             ClaimedGiftIds = claimedGiftIds;
         }
+
+
     }
 }