diff --git a/Controllers/ApiController.cs b/Controllers/ApiController.cs
index 8ca3db31..16b93df4 100644
--- a/Controllers/ApiController.cs
+++ b/Controllers/ApiController.cs
@@ -419,7 +419,7 @@ namespace QuotationMaker.Controllers
 
                     if (objSub.quotationSubItem_hasAC == "Y" && objMain.quotationMainItem_ac > 0)
                     {
-                        acRowIndArr.ToList().Append(editIndex);
+                        acRowIndArr = acRowIndArr.ToList().Append(editIndex).ToArray();
                     }
 
                     row = (XSSFRow)sheet.GetRow(editIndex);
@@ -506,7 +506,6 @@ namespace QuotationMaker.Controllers
                 string tmpForm1 = "SUM(G" + (rangeSubStart + 1).ToString() + ":G" + (rangeSubEnd + 1).ToString() + ")";
                 row.Cells[6].SetCellFormula(tmpForm1);
                 row.Cells[6].CellStyle = copyTempCellStyleRight;
-                row.Cells[6].SetCellType(CellType.Formula);
 
                 rowCount++;
 
@@ -523,6 +522,27 @@ namespace QuotationMaker.Controllers
                 row.Cells[6].CellStyle = copyTempCellStyleRight;
                 row.Cells[0].SetCellValue(row.Cells[0].StringCellValue.Replace("{quotationMainItem_ac}", objMain.quotationMainItem_ac.ToString()));
 
+
+                //如果有AC用公式取代0
+                if (objMain.quotationMainItem_ac > 0) {
+                    if (acRowIndArr.Length > 0) {
+                        row.Cells[6].SetCellType(CellType.Formula);
+                        string tmpForm2 = "";
+
+                        foreach (int acRowIndex in acRowIndArr) {
+                            if (tmpForm2 != "") {
+                                tmpForm2 = tmpForm2 + " + ";
+                            }
+
+                            tmpForm2 += " ROUND((D" + (acRowIndex + 1).ToString() + " * E" + (acRowIndex + 1).ToString() + ") * " + (objMain.quotationMainItem_ac / 100) + ", 0) ";
+                        }
+
+                        row.Cells[6].SetCellFormula(tmpForm2);
+                    }
+
+
+                }
+
                 rowCount++;
 
                 editIndex++;