html代码：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> </head> <body> <!-- 表格的合并 colspan : 跨列 rowspan : 跨行 --> <table border="1px" width="400px"> <tr> <td colspan="2">11</td> <td>13</td> <td>14</td> </tr> <tr> <td>21</td> <td colspan="2" rowspan="2"> <table border="1px" width="100%"> <tr> <td>1</td> <td>1</td> <td>1</td> </tr> <tr> <td>1</td> <td>1</td> <td>1</td> </tr> </table> </td> <td>24</td> </tr> <tr> <td>31</td> <td>34</td> </tr> <tr> <td>41</td> <td>42</td> <td>43</td> <td rowspan="2">44</td> </tr> <tr> <td>51</td> <td>52</td> <td>53</td> </tr> </table> </body> </html>
效果：
