diff --git a/src/main/java/com/kospo/svcm/service/impl/EstimateServiceImpl.java b/src/main/java/com/kospo/svcm/service/impl/EstimateServiceImpl.java
index 5ab7468..59a0b98 100644
--- a/src/main/java/com/kospo/svcm/service/impl/EstimateServiceImpl.java
+++ b/src/main/java/com/kospo/svcm/service/impl/EstimateServiceImpl.java
@@ -6,6 +6,7 @@ import com.kospo.svcm.config.utils.FileUtils;
 import com.kospo.svcm.config.utils.SequenceUtils;
 import com.kospo.svcm.dto.req.EstimateListSaveRequest;
 import com.kospo.svcm.dto.req.EstimateListUpdateRequest;
+import com.kospo.svcm.dto.req.EstimateSaveRequest;
 import com.kospo.svcm.dto.res.EstimateListResponse;
 import com.kospo.svcm.dto.res.EstimateResponse;
 import com.kospo.svcm.dto.res.PbAttResponse;
@@ -54,6 +55,11 @@ public class EstimateServiceImpl implements EstimateService {
     public EstimateListResponse save(EstimateListSaveRequest bidListSaveRequest) {
         Business business = (Business) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
 
+        List<EstimateSaveRequest> nagativeList = bidListSaveRequest.getEstimates().stream().filter(estimate -> estimate.getAmt() <= 0).toList();
+        if(!nagativeList.isEmpty()) throw new CustomMessageException(CustomMessageException.CusMessage.builder()
+                .code("999999")
+                .message("음수 또는 0 은 입력 불가합니다.")
+                .build());
         List<Estimate> bids = new ArrayList<>();
 
         String prcsNo = bidListSaveRequest.getEstimates().get(0).getPrcsNo();