diff --git a/doc/doc.html b/doc/doc.html
index 1bd92f13a22ba02bbb03df881f60e39611beeec4..52066e8eb17710e414c502576eac6b6a00dce7e5 100644
--- a/doc/doc.html
+++ b/doc/doc.html
@@ -2756,6 +2756,11 @@ indicator : [
                                         <td></td>
                                         <td> 节点是否能被拖拽 </td>
                                     </tr>
+                                    <tr>
+                                        <td> {number} category </td>
+                                        <td></td>
+                                        <td> 节点的 category index </td>
+                                    </tr>
                                     <tr>
                                         <td> itemStyle </td>
                                         <td></td>