diff --git a/WindowsFormsApp6/MainForm.cs b/WindowsFormsApp6/MainForm.cs
index c31adac..b7342f7 100644
--- a/WindowsFormsApp6/MainForm.cs
+++ b/WindowsFormsApp6/MainForm.cs
@@ -1863,33 +1863,46 @@ namespace WindowsFormsApp6
 
                     if (isMergedRow)
                     {
-                        // 合并为一列，只显示第一个试样的值
-                        ICell valueCell = row.CreateCell(1);
-                        if (dataTable.Columns.Contains("试样1") && dataRow["试样1"] != DBNull.Value)
+                        // 按每5个试样一组显示
+                        int groupCount = (int)Math.Ceiling((double)sampleCount / 5.0);
+                        
+                        for (int groupIndex = 0; groupIndex < groupCount; groupIndex++)
                         {
-                            object value = dataRow["试样1"];
-                            if (value != null && double.TryParse(value.ToString(), out double numValue))
+                            int startSample = groupIndex * 5 + 1;
+                            int endSample = Math.Min(startSample + 4, sampleCount);
+                            
+                            // 查找该组的统计值（存储在该组第一个试样的列中）
+                            ICell valueCell = row.CreateCell(startSample);
+                            if (dataTable.Columns.Contains($"试样{startSample}") && dataRow[$"试样{startSample}"] != DBNull.Value)
                             {
-                                valueCell.SetCellValue(numValue);
+                                object value = dataRow[$"试样{startSample}"];
+                                if (value != null && double.TryParse(value.ToString(), out double numValue))
+                                {
+                                    valueCell.SetCellValue(numValue);
+                                }
+                                else
+                                {
+                                    valueCell.SetCellValue("");
+                                }
                             }
                             else
                             {
                                 valueCell.SetCellValue("");
                             }
+                            valueCell.CellStyle = styles.yellowStyle;
+                            
+                            // 为该组的其他单元格设置样式
+                            for (int i = startSample + 1; i <= endSample; i++)
+                            {
+                                row.CreateCell(i).CellStyle = styles.yellowStyle;
+                            }
+                            
+                            // 合并该组的单元格
+                            if (endSample > startSample)
+                            {
+                                sheet.AddMergedRegion(new CellRangeAddress(currentRow - 1, currentRow - 1, startSample, endSample));
+                            }
                         }
-                        else
-                        {
-                            valueCell.SetCellValue("");
-                        }
-                        valueCell.CellStyle = styles.yellowStyle;
-                        
-                        // 为合并区域的其他单元格设置样式
-                        for (int i = 2; i <= sampleCount; i++)
-                        {
-                            row.CreateCell(i).CellStyle = styles.yellowStyle;
-                        }
-                        // 合并单元格
-                        sheet.AddMergedRegion(new CellRangeAddress(currentRow - 1, currentRow - 1, 1, sampleCount));
                     }
                     else
                     {