diff --git a/src/main/java/com/alibaba/excel/annotation/ExcelProperty.java b/src/main/java/com/alibaba/excel/annotation/ExcelProperty.java
index 5c778a847d8ea494fbfcab3f97b6774527ef9682..28e1ccd39281d8ff0adf78d9afd5bcf16c4c33f4 100644
--- a/src/main/java/com/alibaba/excel/annotation/ExcelProperty.java
+++ b/src/main/java/com/alibaba/excel/annotation/ExcelProperty.java
@@ -32,7 +32,7 @@ public @interface ExcelProperty {
     /**
      * Index of column
      *
-     * Read or write it on the index of column,If it's equal to -1, it's sorted by Java class.
+     * Read or write it on the index of column, If it's equal to -1, it's sorted by Java class.
      *
      * priority: index > order > default sort
      *
diff --git a/src/main/java/com/alibaba/excel/annotation/write/style/ContentFontStyle.java b/src/main/java/com/alibaba/excel/annotation/write/style/ContentFontStyle.java
index d593aef38c931de5d2d676bd973856aaa6e4ed04..533ae6aa5cab50f3c0ae50eb3c4b18b47ebc127a 100644
--- a/src/main/java/com/alibaba/excel/annotation/write/style/ContentFontStyle.java
+++ b/src/main/java/com/alibaba/excel/annotation/write/style/ContentFontStyle.java
@@ -52,7 +52,7 @@ public @interface ContentFontStyle {
     short color() default -1;
 
     /**
-     * Set normal,super or subscript.
+     * Set normal, super or subscript.
      *
      * @see Font#SS_NONE
      * @see Font#SS_SUPER
diff --git a/src/main/java/com/alibaba/excel/annotation/write/style/HeadFontStyle.java b/src/main/java/com/alibaba/excel/annotation/write/style/HeadFontStyle.java
index 957e50f5aa6b83039603025fd07e37ab0c1e1ac9..d25dad7766dffc460396a056544572063836a63e 100644
--- a/src/main/java/com/alibaba/excel/annotation/write/style/HeadFontStyle.java
+++ b/src/main/java/com/alibaba/excel/annotation/write/style/HeadFontStyle.java
@@ -52,7 +52,7 @@ public @interface HeadFontStyle {
     short color() default -1;
 
     /**
-     * Set normal,super or subscript.
+     * Set normal, super or subscript.
      *
      * @see Font#SS_NONE
      * @see Font#SS_SUPER
diff --git a/src/main/java/com/alibaba/excel/metadata/CellExtra.java b/src/main/java/com/alibaba/excel/metadata/CellExtra.java
index 937b9ac77a188f3ca370a4fae087ff126a9a2087..778f95fc472117562fbf09bb6cb78af12258ebe2 100644
--- a/src/main/java/com/alibaba/excel/metadata/CellExtra.java
+++ b/src/main/java/com/alibaba/excel/metadata/CellExtra.java
@@ -20,19 +20,19 @@ public class CellExtra extends AbstractCell {
      */
     private String text;
     /**
-     * First row index,if this object is an interval
+     * First row index, if this object is an interval
      */
     private Integer firstRowIndex;
     /**
-     * Last row index,if this object is an interval
+     * Last row index, if this object is an interval
      */
     private Integer lastRowIndex;
     /**
-     * First column index,if this object is an interval
+     * First column index, if this object is an interval
      */
     private Integer firstColumnIndex;
     /**
-     * Last column index,if this object is an interval
+     * Last column index, if this object is an interval
      */
     private Integer lastColumnIndex;
 
diff --git a/src/main/java/com/alibaba/excel/metadata/property/FontProperty.java b/src/main/java/com/alibaba/excel/metadata/property/FontProperty.java
index 04caf9bb5f9477dc3ab93053e19b6ad7f3086799..06aec86302f9f038e4415e0b01003dee9b684b3d 100644
--- a/src/main/java/com/alibaba/excel/metadata/property/FontProperty.java
+++ b/src/main/java/com/alibaba/excel/metadata/property/FontProperty.java
@@ -40,7 +40,7 @@ public class FontProperty {
      */
     private Short color;
     /**
-     * Set normal,super or subscript.
+     * Set normal, super or subscript.
      *
      * @see Font#SS_NONE
      * @see Font#SS_SUPER
diff --git a/src/main/java/com/alibaba/excel/read/builder/ExcelReaderBuilder.java b/src/main/java/com/alibaba/excel/read/builder/ExcelReaderBuilder.java
index 81f35862afb9490b69972ad85b453ae58c513fd3..b630eea293751e3b979250b2a714c99eb5908ee7 100644
--- a/src/main/java/com/alibaba/excel/read/builder/ExcelReaderBuilder.java
+++ b/src/main/java/com/alibaba/excel/read/builder/ExcelReaderBuilder.java
@@ -41,7 +41,7 @@ public class ExcelReaderBuilder extends AbstractExcelReaderParameterBuilder<Exce
     /**
      * Read InputStream
      * <p>
-     * If 'inputStream' and 'file' all not empty,file first
+     * If 'inputStream' and 'file' all not empty, file first
      */
     public ExcelReaderBuilder file(InputStream inputStream) {
         readWorkbook.setInputStream(inputStream);
@@ -51,7 +51,7 @@ public class ExcelReaderBuilder extends AbstractExcelReaderParameterBuilder<Exce
     /**
      * Read file
      * <p>
-     * If 'inputStream' and 'file' all not empty,file first
+     * If 'inputStream' and 'file' all not empty, file first
      */
     public ExcelReaderBuilder file(File file) {
         readWorkbook.setFile(file);
@@ -61,7 +61,7 @@ public class ExcelReaderBuilder extends AbstractExcelReaderParameterBuilder<Exce
     /**
      * Read file
      * <p>
-     * If 'inputStream' and 'file' all not empty,file first
+     * If 'inputStream' and 'file' all not empty, file first
      */
     public ExcelReaderBuilder file(String pathName) {
         return file(new File(pathName));
@@ -70,7 +70,7 @@ public class ExcelReaderBuilder extends AbstractExcelReaderParameterBuilder<Exce
     /**
      * Mandatory use 'inputStream' .Default is false.
      * <p>
-     * if false,Will transfer 'inputStream' to temporary files to improve efficiency
+     * if false, Will transfer 'inputStream' to temporary files to improve efficiency
      */
     public ExcelReaderBuilder mandatoryUseInputStream(Boolean mandatoryUseInputStream) {
         readWorkbook.setMandatoryUseInputStream(mandatoryUseInputStream);
diff --git a/src/main/java/com/alibaba/excel/read/metadata/ReadWorkbook.java b/src/main/java/com/alibaba/excel/read/metadata/ReadWorkbook.java
index c9e4db9358ed078fb4548ecec75d0e4023860930..1ef7032fe111450ab5f48cab4a33d323d257b2ee 100644
--- a/src/main/java/com/alibaba/excel/read/metadata/ReadWorkbook.java
+++ b/src/main/java/com/alibaba/excel/read/metadata/ReadWorkbook.java
@@ -27,19 +27,19 @@ public class ReadWorkbook extends ReadBasicParameter {
     /**
      * Read InputStream
      * <p>
-     * If 'inputStream' and 'file' all not empty,file first
+     * If 'inputStream' and 'file' all not empty, file first
      */
     private InputStream inputStream;
     /**
      * Read file
      * <p>
-     * If 'inputStream' and 'file' all not empty,file first
+     * If 'inputStream' and 'file' all not empty, file first
      */
     private File file;
     /**
      * Mandatory use 'inputStream' .Default is false.
      * <p>
-     * if false,Will transfer 'inputStream' to temporary files to improve efficiency
+     * if false, Will transfer 'inputStream' to temporary files to improve efficiency
      */
     private Boolean mandatoryUseInputStream;
     /**
diff --git a/src/main/java/com/alibaba/excel/read/metadata/holder/ReadWorkbookHolder.java b/src/main/java/com/alibaba/excel/read/metadata/holder/ReadWorkbookHolder.java
index 375e32cc219d82be276434fcc4910534e4fc82fe..c6462d941aa849f5fdaba9d8e74bf1b90d31f2b4 100644
--- a/src/main/java/com/alibaba/excel/read/metadata/holder/ReadWorkbookHolder.java
+++ b/src/main/java/com/alibaba/excel/read/metadata/holder/ReadWorkbookHolder.java
@@ -33,19 +33,19 @@ public class ReadWorkbookHolder extends AbstractReadHolder {
     /**
      * Read InputStream
      * <p>
-     * If 'inputStream' and 'file' all not empty,file first
+     * If 'inputStream' and 'file' all not empty, file first
      */
     private InputStream inputStream;
     /**
      * Read file
      * <p>
-     * If 'inputStream' and 'file' all not empty,file first
+     * If 'inputStream' and 'file' all not empty, file first
      */
     private File file;
     /**
      * Mandatory use 'inputStream' .Default is false.
      * <p>
-     * if false,Will transfer 'inputStream' to temporary files to improve efficiency
+     * if false, Will transfer 'inputStream' to temporary files to improve efficiency
      */
     private Boolean mandatoryUseInputStream;
     /**
diff --git a/src/main/java/com/alibaba/excel/write/builder/ExcelWriterBuilder.java b/src/main/java/com/alibaba/excel/write/builder/ExcelWriterBuilder.java
index 12c2f22fd561bf82659693b510f2969a8c26de39..3fb0323614be53d1dc5c4e917781343bba0637fb 100644
--- a/src/main/java/com/alibaba/excel/write/builder/ExcelWriterBuilder.java
+++ b/src/main/java/com/alibaba/excel/write/builder/ExcelWriterBuilder.java
@@ -49,7 +49,7 @@ public class ExcelWriterBuilder extends AbstractExcelWriterParameterBuilder<Exce
     }
 
     /**
-     * Write excel in memory. Default false,the cache file is created and finally written to excel.
+     * Write excel in memory. Default false, the cache file is created and finally written to excel.
      * <p>
      * Comment and RichTextString are only supported in memory mode.
      */
diff --git a/src/main/java/com/alibaba/excel/write/executor/AbstractExcelWriteExecutor.java b/src/main/java/com/alibaba/excel/write/executor/AbstractExcelWriteExecutor.java
index 4eb115c5089ef5f91671771d75b5421d27e6f964..38f6558bee248b1dc2cadcf43be9f459ac87ddda 100644
--- a/src/main/java/com/alibaba/excel/write/executor/AbstractExcelWriteExecutor.java
+++ b/src/main/java/com/alibaba/excel/write/executor/AbstractExcelWriteExecutor.java
@@ -117,12 +117,12 @@ public abstract class AbstractExcelWriteExecutor implements ExcelWriteExecutor {
         } catch (Exception e) {
             throw new ExcelDataConvertException(cell.getRow().getRowNum(), cell.getColumnIndex(),
                 new CellData(CellDataTypeEnum.EMPTY), excelContentProperty,
-                "Convert data:" + value + " error,at row:" + cell.getRow().getRowNum(), e);
+                "Convert data:" + value + " error, at row:" + cell.getRow().getRowNum(), e);
         }
         if (cellData == null || cellData.getType() == null) {
             throw new ExcelDataConvertException(cell.getRow().getRowNum(), cell.getColumnIndex(),
                 new CellData(CellDataTypeEnum.EMPTY), excelContentProperty,
-                "Convert data:" + value + " return null,at row:" + cell.getRow().getRowNum());
+                "Convert data:" + value + " return null, at row:" + cell.getRow().getRowNum());
         }
         return cellData;
     }
diff --git a/src/main/java/com/alibaba/excel/write/executor/ExcelWriteAddExecutor.java b/src/main/java/com/alibaba/excel/write/executor/ExcelWriteAddExecutor.java
index 9f229029e08f0e5c81f4b35c080935fe01474b74..981293d352073ab7974bcdb8394c2227223a8f64 100644
--- a/src/main/java/com/alibaba/excel/write/executor/ExcelWriteAddExecutor.java
+++ b/src/main/java/com/alibaba/excel/write/executor/ExcelWriteAddExecutor.java
@@ -48,7 +48,7 @@ public class ExcelWriteAddExecutor extends AbstractExcelWriteExecutor {
         if (writeSheetHolder.isNew() && !writeSheetHolder.getExcelWriteHeadProperty().hasHead()) {
             newRowIndex += writeContext.currentWriteHolder().relativeHeadRowIndex();
         }
-        // BeanMap is out of order,so use sortedAllFiledMap
+        // BeanMap is out of order, so use sortedAllFiledMap
         Map<Integer, Field> sortedAllFiledMap = new TreeMap<Integer, Field>();
         int relativeRowIndex = 0;
         for (Object oneRowData : data) {
diff --git a/src/main/java/com/alibaba/excel/write/metadata/WriteWorkbook.java b/src/main/java/com/alibaba/excel/write/metadata/WriteWorkbook.java
index c28e041268f5e16049d649f382a88190038a56e7..d58504053526076463b10a4b6445de470f678e6e 100644
--- a/src/main/java/com/alibaba/excel/write/metadata/WriteWorkbook.java
+++ b/src/main/java/com/alibaba/excel/write/metadata/WriteWorkbook.java
@@ -20,26 +20,26 @@ public class WriteWorkbook extends WriteBasicParameter {
     /**
      * Final output file
      * <p>
-     * If 'outputStream' and 'file' all not empty,file first
+     * If 'outputStream' and 'file' all not empty, file first
      */
     private File file;
     /**
      * Final output stream
      * <p>
-     * If 'outputStream' and 'file' all not empty,file first
+     * If 'outputStream' and 'file' all not empty, file first
      */
     private OutputStream outputStream;
     /**
      * Template input stream
      * <p>
-     * If 'inputStream' and 'file' all not empty,file first
+     * If 'inputStream' and 'file' all not empty, file first
      */
     private InputStream templateInputStream;
 
     /**
      * Template file
      * <p>
-     * If 'inputStream' and 'file' all not empty,file first
+     * If 'inputStream' and 'file' all not empty, file first
      */
     private File templateFile;
     /**
@@ -58,7 +58,7 @@ public class WriteWorkbook extends WriteBasicParameter {
      */
     private String password;
     /**
-     * Write excel in memory. Default false,the cache file is created and finally written to excel.
+     * Write excel in memory. Default false, the cache file is created and finally written to excel.
      * <p>
      * Comment and RichTextString are only supported in memory mode.
      */
diff --git a/src/main/java/com/alibaba/excel/write/metadata/holder/WriteSheetHolder.java b/src/main/java/com/alibaba/excel/write/metadata/holder/WriteSheetHolder.java
index 56fc7e4e31907ff7110c9199e8a5470b133828a8..15b88292669d08e48f2688e1942c3cd584109c6e 100644
--- a/src/main/java/com/alibaba/excel/write/metadata/holder/WriteSheetHolder.java
+++ b/src/main/java/com/alibaba/excel/write/metadata/holder/WriteSheetHolder.java
@@ -148,12 +148,12 @@ public class WriteSheetHolder extends AbstractWriteHolder {
     }
 
     /**
-     * Get the last line of index,you have to make sure that the data is written next
+     * Get the last line of index, you have to make sure that the data is written next
      *
      * @return
      */
     public int getNewRowIndexAndStartDoWrite() {
-        // 'getLastRowNum' doesn't matter if it has one or zero,is's zero
+        // 'getLastRowNum' doesn't matter if it has one or zero, it's zero
         int newRowIndex = 0;
         switch (writeLastRowTypeEnum) {
             case TEMPLATE_EMPTY:
diff --git a/src/main/java/com/alibaba/excel/write/metadata/holder/WriteWorkbookHolder.java b/src/main/java/com/alibaba/excel/write/metadata/holder/WriteWorkbookHolder.java
index 8c84f1dc4be34b1e116aaafe6d351675976404a8..999e7f1029af76a5d86691261ad59d420d061162 100644
--- a/src/main/java/com/alibaba/excel/write/metadata/holder/WriteWorkbookHolder.java
+++ b/src/main/java/com/alibaba/excel/write/metadata/holder/WriteWorkbookHolder.java
@@ -52,7 +52,7 @@ public class WriteWorkbookHolder extends AbstractWriteHolder {
     /**
      * Final output file
      * <p>
-     * If 'outputStream' and 'file' all not empty,file first
+     * If 'outputStream' and 'file' all not empty, file first
      */
     private File file;
     /**
@@ -62,13 +62,13 @@ public class WriteWorkbookHolder extends AbstractWriteHolder {
     /**
      * Template input stream
      * <p>
-     * If 'inputStream' and 'file' all not empty,file first
+     * If 'inputStream' and 'file' all not empty, file first
      */
     private InputStream templateInputStream;
     /**
      * Template file
      * <p>
-     * If 'inputStream' and 'file' all not empty,file first
+     * If 'inputStream' and 'file' all not empty, file first
      */
     private File templateFile;
     /**
@@ -102,7 +102,7 @@ public class WriteWorkbookHolder extends AbstractWriteHolder {
      */
     private String password;
     /**
-     * Write excel in memory. Default false,the cache file is created and finally written to excel.
+     * Write excel in memory. Default false, the cache file is created and finally written to excel.
      * <p>
      * Comment and RichTextString are only supported in memory mode.
      */
diff --git a/src/main/java/com/alibaba/excel/write/metadata/style/WriteFont.java b/src/main/java/com/alibaba/excel/write/metadata/style/WriteFont.java
index 6ed4c2a75fcd1336da9597a5b11d17811dca24ff..35fe7b92a7c52ae8c930ca227d38d023612687f6 100644
--- a/src/main/java/com/alibaba/excel/write/metadata/style/WriteFont.java
+++ b/src/main/java/com/alibaba/excel/write/metadata/style/WriteFont.java
@@ -37,7 +37,7 @@ public class WriteFont {
      */
     private Short color;
     /**
-     * Set normal,super or subscript.
+     * Set normal, super or subscript.
      *
      * @see Font#SS_NONE
      * @see Font#SS_SUPER
diff --git a/src/main/java/com/alibaba/excel/write/style/column/AbstractHeadColumnWidthStyleStrategy.java b/src/main/java/com/alibaba/excel/write/style/column/AbstractHeadColumnWidthStyleStrategy.java
index 1a88eff638914819b6d5e122a69767490ebe7d46..14a76c71d64ab2e4445f0c79d0d28335ae4d0dc8 100644
--- a/src/main/java/com/alibaba/excel/write/style/column/AbstractHeadColumnWidthStyleStrategy.java
+++ b/src/main/java/com/alibaba/excel/write/style/column/AbstractHeadColumnWidthStyleStrategy.java
@@ -33,7 +33,7 @@ public abstract class AbstractHeadColumnWidthStyleStrategy extends AbstractColum
      * Returns the column width corresponding to each column head.
      *
      * <p>
-     * if return null,ignore
+     * if return null, ignore
      *
      * @param head
      *            Nullable.
diff --git a/src/test/java/com/alibaba/easyexcel/test/core/compatibility/CompatibilityDataTest.java b/src/test/java/com/alibaba/easyexcel/test/core/compatibility/CompatibilityDataTest.java
index 258f055c565325b6871b3c07c10cddab9a9102c6..39ceff92e26ac7353fbcbfe8d22652cbd2f47e50 100644
--- a/src/test/java/com/alibaba/easyexcel/test/core/compatibility/CompatibilityDataTest.java
+++ b/src/test/java/com/alibaba/easyexcel/test/core/compatibility/CompatibilityDataTest.java
@@ -58,7 +58,7 @@ public class CompatibilityDataTest {
         generateParam.setOutputStream(out);
         generateParam.setClazz(null);
         ExcelWriter writer = new ExcelWriter(generateParam);
-        // sheet1 width,string head,string data
+        // sheet1 width, string head, string data
         Sheet sheet1 = new Sheet(1, 3);
         sheet1.setSheetName("第一个sheet");
         Map columnWidth = new HashMap();
@@ -68,7 +68,7 @@ public class CompatibilityDataTest {
         sheet1.setHead(head());
         writer.write1(listData(), sheet1);
 
-        // sheet2 style,class head
+        // sheet2 style, class head
         Sheet sheet2 = new Sheet(2, 3, CompatibilityData.class, "第二个sheet", null);
         sheet2.setStartRow(5);
         sheet2.setTableStyle(style());