diff --git a/src/main/java/com/alibaba/excel/context/WriteContextImpl.java b/src/main/java/com/alibaba/excel/context/WriteContextImpl.java
index 86ecc20..22ccabf 100644
--- a/src/main/java/com/alibaba/excel/context/WriteContextImpl.java
+++ b/src/main/java/com/alibaba/excel/context/WriteContextImpl.java
@@ -129,7 +129,7 @@ public class WriteContextImpl implements WriteContext {
             sheetNo = 0;
         }
         if (sheetNo != null) {
-            writeSheetHolder = writeWorkbookHolder.getHasBeenInitializedSheetIndexMap().get(writeSheet.getSheetNo());
+            writeSheetHolder = writeWorkbookHolder.getHasBeenInitializedSheetIndexMap().get(sheetNo);
         }
         if (writeSheetHolder == null && !StringUtils.isEmpty(writeSheet.getSheetName())) {
             writeSheetHolder = writeWorkbookHolder.getHasBeenInitializedSheetNameMap().get(writeSheet.getSheetName());
diff --git a/src/test/java/com/alibaba/easyexcel/test/temp/WriteLargeTest.java b/src/test/java/com/alibaba/easyexcel/test/temp/WriteLargeTest.java
new file mode 100644
index 0000000..008d762
--- /dev/null
+++ b/src/test/java/com/alibaba/easyexcel/test/temp/WriteLargeTest.java
@@ -0,0 +1,108 @@
+package com.alibaba.easyexcel.test.temp;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.poi.ss.usermodel.BorderStyle;
+import org.apache.poi.ss.usermodel.FillPatternType;
+import org.apache.poi.ss.usermodel.HorizontalAlignment;
+import org.apache.poi.ss.usermodel.IndexedColors;
+import org.apache.poi.ss.usermodel.VerticalAlignment;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.alibaba.easyexcel.test.core.large.LargeData;
+import com.alibaba.easyexcel.test.demo.write.DemoData;
+import com.alibaba.easyexcel.test.util.TestFileUtil;
+import com.alibaba.excel.EasyExcel;
+import com.alibaba.excel.ExcelWriter;
+import com.alibaba.excel.write.metadata.WriteSheet;
+import com.alibaba.excel.write.metadata.style.WriteCellStyle;
+import com.alibaba.excel.write.metadata.style.WriteFont;
+import com.alibaba.excel.write.style.HorizontalCellStyleStrategy;
+
+/**
+ * 临时测试
+ *
+ * @author Jiaju Zhuang
+ **/
+@Ignore
+public class WriteLargeTest {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(WriteLargeTest.class);
+    private int i = 0;
+
+    @Test
+    public void test() throws Exception {
+        // 方法2 如果写到不同的sheet 同一个对象
+        String fileName = TestFileUtil.getPath() + "large" + System.currentTimeMillis() + ".xlsx";
+        // 头的策略
+        WriteCellStyle headWriteCellStyle = new WriteCellStyle();
+        // 背景设置为红色
+        headWriteCellStyle.setFillForegroundColor(IndexedColors.RED.getIndex());
+        WriteFont headWriteFont = new WriteFont();
+        headWriteFont.setFontHeightInPoints((short)20);
+        headWriteCellStyle.setWriteFont(headWriteFont);
+        // 内容的策略
+        WriteCellStyle contentWriteCellStyle = new WriteCellStyle();
+        // 这里需要指定 FillPatternType 为FillPatternType.SOLID_FOREGROUND 不然无法显示背景颜色.头默认了 FillPatternType所以可以不指定
+        contentWriteCellStyle.setFillPatternType(FillPatternType.SOLID_FOREGROUND);
+        // 背景绿色
+        contentWriteCellStyle.setFillForegroundColor(IndexedColors.GREEN.getIndex());
+        WriteFont contentWriteFont = new WriteFont();
+        // 字体大小
+        contentWriteFont.setFontHeightInPoints((short)20);
+        contentWriteCellStyle.setWriteFont(contentWriteFont);
+        // 这个策略是 头是头的样式 内容是内容的样式 其他的策略可以自己实现
+        HorizontalCellStyleStrategy horizontalCellStyleStrategy =
+            new HorizontalCellStyleStrategy(headWriteCellStyle, contentWriteCellStyle);
+
+
+        ExcelWriter excelWriter = EasyExcel.write(fileName,LargeData.class).registerWriteHandler(horizontalCellStyleStrategy).build();
+        WriteSheet writeSheet = EasyExcel.writerSheet().build();
+        for (int j = 0; j < 100; j++) {
+            excelWriter.write(data(), writeSheet);
+            LOGGER.info("{} fill success.", j);
+        }
+        excelWriter.finish();
+
+    }
+
+
+    private List<LargeData> data() {
+        List<LargeData> list = new ArrayList<LargeData>();
+        int size = i + 5000;
+        for (; i < size; i++) {
+            LargeData largeData = new LargeData();
+            list.add(largeData);
+            largeData.setStr1("str1-" + i);
+            largeData.setStr2("str2-" + i);
+            largeData.setStr3("str3-" + i);
+            largeData.setStr4("str4-" + i);
+            largeData.setStr5("str5-" + i);
+            largeData.setStr6("str6-" + i);
+            largeData.setStr7("str7-" + i);
+            largeData.setStr8("str8-" + i);
+            largeData.setStr9("str9-" + i);
+            largeData.setStr10("str10-" + i);
+            largeData.setStr11("str11-" + i);
+            largeData.setStr12("str12-" + i);
+            largeData.setStr13("str13-" + i);
+            largeData.setStr14("str14-" + i);
+            largeData.setStr15("str15-" + i);
+            largeData.setStr16("str16-" + i);
+            largeData.setStr17("str17-" + i);
+            largeData.setStr18("str18-" + i);
+            largeData.setStr19("str19-" + i);
+            largeData.setStr20("str20-" + i);
+            largeData.setStr21("str21-" + i);
+            largeData.setStr22("str22-" + i);
+            largeData.setStr23("str23-" + i);
+            largeData.setStr24("str24-" + i);
+            largeData.setStr25("str25-" + i);
+        }
+        return list;
+    }
+}