diff --git a/src/main/java/com/brainpix/joining/dto/IdeaMarketPriceDto.java b/src/main/java/com/brainpix/joining/dto/IdeaMarketPriceDto.java
index 8fdfd50..30f8581 100644
--- a/src/main/java/com/brainpix/joining/dto/IdeaMarketPriceDto.java
+++ b/src/main/java/com/brainpix/joining/dto/IdeaMarketPriceDto.java
@@ -18,4 +18,8 @@ public class IdeaMarketPriceDto {
 	@NotNull(message = "수량 설정은 필수입니다.")
 	@Min(value = 1, message = "수량은 최소 1개 이상이어야 합니다.")
 	private Long totalQuantity;
+
+	public void updateTotalQuantity(Long totalQuantity) {
+		this.totalQuantity = totalQuantity;
+	}
 }
diff --git a/src/main/java/com/brainpix/post/service/IdeaMarketService.java b/src/main/java/com/brainpix/post/service/IdeaMarketService.java
index 1528c1b..58d1618 100644
--- a/src/main/java/com/brainpix/post/service/IdeaMarketService.java
+++ b/src/main/java/com/brainpix/post/service/IdeaMarketService.java
@@ -9,7 +9,6 @@
 import com.brainpix.api.code.error.IdeaMarketErrorCode;
 import com.brainpix.api.code.error.PostErrorCode;
 import com.brainpix.api.exception.BrainPixException;
-import com.brainpix.joining.dto.IdeaMarketPriceDto;
 import com.brainpix.joining.entity.quantity.Price;
 import com.brainpix.joining.repository.CollectionGatheringRepository;
 import com.brainpix.joining.repository.RequestTaskPurchasingRepository;
@@ -58,9 +57,7 @@ public Long createIdeaMarket(Long userId, IdeaMarketCreateDto createDto) {
 
 		// IDEA_SOLUTION은 수량화가 불가능한 무형의 자산이므로 totalQuantity를 무한으로 설정
 		if (createDto.getIdeaMarketType().equals(IdeaMarketType.IDEA_SOLUTION)) {
-			IdeaMarketPriceDto ideaMarketPriceDto = new IdeaMarketPriceDto(createDto.getPriceDto().getPrice(),
-				(long)Integer.MAX_VALUE);
-			createDto = new IdeaMarketCreateDto(createDto.getIdeaMarketType(), ideaMarketPriceDto);
+			createDto.getPriceDto().updateTotalQuantity((long)Integer.MAX_VALUE);
 		}
 
 		Price price = priceService.createIdeaMarketPrice(createDto.getPriceDto());