diff --git a/hwanyoung2/Content/Hwanyoung/BP_ShopNPC.uasset b/hwanyoung2/Content/Hwanyoung/BP_ShopNPC.uasset
index d4e82df7..3a999b59 100644
--- a/hwanyoung2/Content/Hwanyoung/BP_ShopNPC.uasset
+++ b/hwanyoung2/Content/Hwanyoung/BP_ShopNPC.uasset
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:4a8c86a2570fc1fbdbb6ff1b364063d1786d1f82b3045f626dd053d036a17261
-size 33246
+oid sha256:a639ad2cf0336103582b83ed15debf86b4e96cb0a209727019be58948569556c
+size 58999
diff --git a/hwanyoung2/Content/Hwanyoung/Illusions/GeneralizedBlueprints/AOEBP/BP_ShopAOE.uasset b/hwanyoung2/Content/Hwanyoung/Illusions/GeneralizedBlueprints/AOEBP/BP_ShopAOE.uasset
index f093cac3..89a4a6bd 100644
--- a/hwanyoung2/Content/Hwanyoung/Illusions/GeneralizedBlueprints/AOEBP/BP_ShopAOE.uasset
+++ b/hwanyoung2/Content/Hwanyoung/Illusions/GeneralizedBlueprints/AOEBP/BP_ShopAOE.uasset
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:afcdd07406d027fbf41155e3dc37e53579251281becf10ef6fd584a06cfe4713
-size 145464
+oid sha256:911edfe10257ea0ad8aee77fa92e95361624c9b969b400cf16fed52070ef2484
+size 124050
diff --git a/hwanyoung2/Content/Hwanyoung/Levels/Sprink_TEST.umap b/hwanyoung2/Content/Hwanyoung/Levels/Sprink_TEST.umap
index 7ac79562..f717d1f2 100644
--- a/hwanyoung2/Content/Hwanyoung/Levels/Sprink_TEST.umap
+++ b/hwanyoung2/Content/Hwanyoung/Levels/Sprink_TEST.umap
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:5ae1110cb70738ceecf2981820c2cee426e72c426ec04c205dd47ade128637fd
-size 21818428
+oid sha256:8adfca0a3dda5c912a27a7bb3c817d9c7d5a2f5e3a5aef0769c70e564df9b621
+size 21818877
diff --git a/hwanyoung2/Intermediate/Build/SourceFileCache.bin b/hwanyoung2/Intermediate/Build/SourceFileCache.bin
index 206bf341..f6f0412c 100644
Binary files a/hwanyoung2/Intermediate/Build/SourceFileCache.bin and b/hwanyoung2/Intermediate/Build/SourceFileCache.bin differ
diff --git a/hwanyoung2/Intermediate/ReimportCache/3688439234.bin b/hwanyoung2/Intermediate/ReimportCache/3688439234.bin
index 47317651..4f7c257d 100644
Binary files a/hwanyoung2/Intermediate/ReimportCache/3688439234.bin and b/hwanyoung2/Intermediate/ReimportCache/3688439234.bin differ
diff --git a/hwanyoung2/Source/hwanyoung2/HYShopAOE.cpp b/hwanyoung2/Source/hwanyoung2/HYShopAOE.cpp
index f386c539..82fc5624 100644
--- a/hwanyoung2/Source/hwanyoung2/HYShopAOE.cpp
+++ b/hwanyoung2/Source/hwanyoung2/HYShopAOE.cpp
@@ -50,10 +50,10 @@ bool AHYShopAOE::RandomizeTradableItemSets(int CurrentHonbaekAmount)
 		return false;
 	}
 
-	// Filtering match the case.(ItemValue is less and equal than honbaek amount and over than 0)
+	// Filtering match the case.(Item can be bought, ItemValue is less and equal than honbaek amount and over than 0)
 	TArray<FInventoryItem*> FilteredItemData = ItemData.FilterByPredicate([CurrentHonbaekAmount](const FInventoryItem* ItemDataRow)
 	{
-		return ItemDataRow->ItemValue > 0 && ItemDataRow->ItemValue <= CurrentHonbaekAmount;
+		return !ItemDataRow->OnlyDropped && ItemDataRow->ItemValue > 0 && ItemDataRow->ItemValue <= CurrentHonbaekAmount;
 	});
 
 	int maxLoopNum = FMath::Min(5, FilteredItemData.Num());
@@ -82,7 +82,7 @@ TMap<FInventoryItem, int> AHYShopAOE::GetTradableItemSets(int CurrentHonbaekAmou
 	for (FInventoryItem TempItem : TempItems)
 	{
 		int MaxAmount = CurrentHonbaekAmount / TempItem.ItemValue;
-		int Amount = FMath::Clamp(FMath::RandRange(0, MaxAmount), 1, MaxAmount);
+		int Amount = FMath::Clamp(FMath::RandRange(0, MaxAmount), 1, 10);
 
 		Item.Add({ TempItem, Amount });
 	}
diff --git a/hwanyoung2/Source/hwanyoung2/HYShopNPCActor.cpp b/hwanyoung2/Source/hwanyoung2/HYShopNPCActor.cpp
index 5b814744..062cf147 100644
--- a/hwanyoung2/Source/hwanyoung2/HYShopNPCActor.cpp
+++ b/hwanyoung2/Source/hwanyoung2/HYShopNPCActor.cpp
@@ -2,6 +2,7 @@
 
 #include "HYShopNPCActor.h"
 #include "Blueprint/UserWidget.h"
+#include "HYPlayerCharacController.h"
 
 void AHYShopNPCActor::Interact_Implementation(APlayerController* Controller)
 {
@@ -17,4 +18,23 @@ void AHYShopNPCActor::Interact_Implementation(APlayerController* Controller)
 	//	ShopWidget = CreateWidget<UUserWidget>(Controller, ShopWidgetClass);
 	//	ShopWidget->AddToViewport();
 	//}
+}
+
+void AHYShopNPCActor::BuyTradableItem_Implementation(APlayerController* Controller, const FInventoryItem ItemToBuy, const int Amount)
+{
+	int CurrentAmount = *TradableItems.Find(ItemToBuy);
+
+	TradableItems[ItemToBuy] = CurrentAmount - Amount;
+
+	AHYPlayerCharacController* PlayerController = Cast<AHYPlayerCharacController>(Controller);
+
+	if (PlayerController)
+	{
+		for (int i = 0; i < Amount; ++i)
+		{
+			PlayerController->AddItemToInventoryByID(ItemToBuy.ItemID);
+		}
+	}
+
+	return;
 }
\ No newline at end of file
diff --git a/hwanyoung2/Source/hwanyoung2/HYShopNPCActor.h b/hwanyoung2/Source/hwanyoung2/HYShopNPCActor.h
index 809e16e1..f30172b2 100644
--- a/hwanyoung2/Source/hwanyoung2/HYShopNPCActor.h
+++ b/hwanyoung2/Source/hwanyoung2/HYShopNPCActor.h
@@ -15,8 +15,18 @@ class HWANYOUNG2_API AHYShopNPCActor : public AHYInteractableActor
 {
 	GENERATED_BODY()
 
+public:
 	virtual void Interact_Implementation(APlayerController* Controller);
 
+	// This Function will be called when player buy the item.
+	// @param Controller: Player Controller, ItemToBuy: the item structure(Data) to buy, Amount: the number of the item.
+	UFUNCTION(BlueprintNativeEvent)
+	void BuyTradableItem(APlayerController* Controller, const FInventoryItem ItemToBuy, const int Amount);
+
+	// This Function will be called when player buy the item.
+	// @param Controller: Player Controller, ItemToBuy: the item structure(Data) to buy, Amount: the number of the item.
+	virtual void BuyTradableItem_Implementation(APlayerController* Controller, const FInventoryItem ItemToBuy, const int Amount);
+
 public:
 	UPROPERTY(EditDefaultsOnly, BlueprintReadWrite)
 	TMap<FInventoryItem, int> TradableItems;