diff --git a/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java b/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
index 573acfc8..4c0d3087 100644
--- a/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
+++ b/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
@@ -34,7 +34,10 @@ import com.interplug.qcast.util.InterfaceQsp;
 import com.interplug.qcast.util.PdfUtil;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.io.InputStream;
 import java.math.BigDecimal;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
@@ -44,6 +47,8 @@ import java.util.Map;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
+import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.ss.usermodel.WorkbookFactory;
 import org.jsoup.nodes.Document;
 import org.jsoup.nodes.Element;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -977,28 +982,30 @@ public class EstimateService {
 
         // SchDrawingFlg (1 : 견적서,2 : 발전시뮬레이션, 3 : 도면, 4 : 가대)
         // ex) 1|2|3|4
-        if (estimateRequest.getSchDrawingFlg().indexOf("1") > -1) {
-          arrSection[iSection] = "div.section1";
-          iSection++;
-          arrSection[iSection] = "div.section2";
-          iSection++;
-        }
+        if (!StringUtils.isEmpty(estimateRequest.getSchDrawingFlg())) {
+          if (estimateRequest.getSchDrawingFlg().indexOf("1") > -1) {
+            arrSection[iSection] = "div.section1";
+            iSection++;
+            arrSection[iSection] = "div.section2";
+            iSection++;
+          }
 
-        if (estimateRequest.getSchDrawingFlg().indexOf("2") > -1) {
-          arrSection[iSection] = "div.section3"; // 발전시뮬레이션
-          iSection++;
-        }
+          if (estimateRequest.getSchDrawingFlg().indexOf("2") > -1) {
+            arrSection[iSection] = "div.section3"; // 발전시뮬레이션
+            iSection++;
+          }
 
-        if (estimateRequest.getSchDrawingFlg().indexOf("3") > -1) {
-          arrSection[iSection] = "div.section4"; // 도면
-          iSection++;
-          arrSection[iSection] = "div.section5"; // 도면
-          iSection++;
-        }
+          if (estimateRequest.getSchDrawingFlg().indexOf("3") > -1) {
+            arrSection[iSection] = "div.section4"; // 도면
+            iSection++;
+            arrSection[iSection] = "div.section5"; // 도면
+            iSection++;
+          }
 
-        if (estimateRequest.getSchDrawingFlg().indexOf("4") > -1) {
-          arrSection[iSection] = "div.section6";
-          iSection++;
+          if (estimateRequest.getSchDrawingFlg().indexOf("4") > -1) {
+            arrSection[iSection] = "div.section6";
+            iSection++;
+          }
         }
 
         // pdf 다운로드
@@ -1006,16 +1013,52 @@ public class EstimateService {
 
       } else {
 
+        Workbook workbook = null;
+
         String excelTemplateNam = "excel_download_quotation_detail_template.xlsx";
 
         ExcelUtil excelUtil = new ExcelUtil();
-        excelUtil.download(
-            request,
-            response,
-            excelUtil.convertVoToMap(estimateResponse),
-            excelUtil.convertListToMap(estimateItemList),
-            estimateRequest.getFileName(),
-            excelTemplateNam);
+        byte[] excelBytes =
+            excelUtil.download(
+                request,
+                response,
+                excelUtil.convertVoToMap(estimateResponse),
+                excelUtil.convertListToMap(estimateItemList),
+                excelTemplateNam);
+
+        InputStream in = new ByteArrayInputStream(excelBytes);
+        workbook = WorkbookFactory.create(in); // JXLS POI 엑셀로 재변환
+
+        // SchDrawingFlg (1 : 견적서,2 : 발전시뮬레이션, 3 : 도면, 4 : 가대)
+        // ex) 1|2|3|4
+        if (!StringUtils.isEmpty(estimateRequest.getSchDrawingFlg())) {
+          if (estimateRequest.getSchDrawingFlg().indexOf("1") < 0) {
+            workbook.removeSheetAt(workbook.getSheetIndex("見積書"));
+            workbook.removeSheetAt(workbook.getSheetIndex("特異事項"));
+          }
+
+          if (estimateRequest.getSchDrawingFlg().indexOf("2") < 0) {
+            workbook.removeSheetAt(workbook.getSheetIndex("発電シミュレーション"));
+          }
+
+          if (estimateRequest.getSchDrawingFlg().indexOf("3") < 0) {
+            workbook.removeSheetAt(workbook.getSheetIndex("割付図・系統図"));
+            workbook.removeSheetAt(workbook.getSheetIndex("架台図"));
+          }
+        }
+
+        // 추후 개발 (가대중량표)
+        if (estimateRequest.getSchDrawingFlg().indexOf("4") < 0) {}
+
+        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
+        workbook.write(byteArrayOutputStream);
+        excelBytes = byteArrayOutputStream.toByteArray();
+
+        response.setHeader(
+            "Content-Disposition",
+            "attachment; filename=\"" + estimateRequest.getFileName() + ".xlsx\"");
+        response.addHeader("Access-Control-Expose-Headers", "Content-Disposition");
+        response.getOutputStream().write(excelBytes);
       }
 
     } catch (Exception e) {
diff --git a/src/main/java/com/interplug/qcast/util/ExcelUtil.java b/src/main/java/com/interplug/qcast/util/ExcelUtil.java
index 9d1a543b..3f75ead1 100644
--- a/src/main/java/com/interplug/qcast/util/ExcelUtil.java
+++ b/src/main/java/com/interplug/qcast/util/ExcelUtil.java
@@ -29,40 +29,43 @@ public class ExcelUtil {
    * @param response HttpServletResponse
    * @param map 엑셀 출력데이터
    * @param list 엑셀 출력 목록 데이터
-   * @param fileName 다운로드 파일명
    * @param templateFileName
    * @throws ParsePropertyException
    * @throws InvalidFormatException
    */
-  public void download(
+  public byte[] download(
       HttpServletRequest request,
       HttpServletResponse response,
       Map<String, Object> map,
       List<Map<String, Object>> list,
-      String fileName,
       String templateFileName)
       throws ParsePropertyException, InvalidFormatException {
+
+    byte[] excelBytes = null;
+
     try {
 
       String templateFilePath = "template/excel/" + templateFileName;
       InputStream templateStream =
           PdfUtil.class.getClassLoader().getResourceAsStream(templateFilePath);
 
-      InputStream is = new BufferedInputStream(templateStream);
+      // InputStream is = new BufferedInputStream(templateStream);
 
-      response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + ".xlsx\"");
-      response.addHeader("Access-Control-Expose-Headers", "Content-Disposition");
-
-      try (OutputStream os = response.getOutputStream()) {
+      try (InputStream is = new BufferedInputStream(templateStream)) {
         Context context = new Context();
         context.putVar("data", map);
         context.putVar("list", list);
 
-        JxlsHelper.getInstance().processTemplate(is, os, context);
+        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
+        JxlsHelper.getInstance().processTemplate(is, byteArrayOutputStream, context);
+
+        excelBytes = byteArrayOutputStream.toByteArray();
       }
     } catch (Exception e) {
       log.debug(e.getMessage());
     }
+
+    return excelBytes;
   }
 
   /**
diff --git a/src/main/resources/template/excel/excel_download_quotation_detail_template.xlsx b/src/main/resources/template/excel/excel_download_quotation_detail_template.xlsx
index e7d0fac3..325d7ff7 100644
Binary files a/src/main/resources/template/excel/excel_download_quotation_detail_template.xlsx and b/src/main/resources/template/excel/excel_download_quotation_detail_template.xlsx differ