diff --git a/doc/doc.html b/doc/doc.html
index 3b8b5c052d0f9c2b298d94ab68f28f815381f11b..9c5016cdf7f033cf534b9077c76228b2d93066d5 100644
--- a/doc/doc.html
+++ b/doc/doc.html
@@ -1488,7 +1488,7 @@ feature : {
                             <td> {Array} links </td>
                             <td> [] </td>
                             <td> 力导向 </td>
-                            <td> 力导向图的边数据, 每一项都有 source, target, weight三个属性, 边的权重(weight)越大则两个顶点之间的联系越大</td>
+                            <td> 力导向图的边数据, 每一项都有 source, target, weight三个属性, source和target是顶点的索引值， 边的权重(weight)越大则两个顶点之间的联系越大(最后稳定之后的距离越小)</td>
                         </tr>
                         <tr>
                             <td> {number} minRadius </td>