diff --git a/src/chart/parallel/ParallelSeries.js b/src/chart/parallel/ParallelSeries.js
index 196ebe6c20c59293d0ddf978b14fac2752b1b3ce..2c10320692305630c245c52e8a2c6a504c6ca8fc 100644
--- a/src/chart/parallel/ParallelSeries.js
+++ b/src/chart/parallel/ParallelSeries.js
@@ -80,14 +80,15 @@ define(function(require) {
 
     function translateCategoryValue(axisModel, dim, rawData) {
         var axisData = axisModel.get('data');
+        var numberDim = +dim.replace('dim', '');
 
         if (axisData && axisData.length) {
             zrUtil.each(rawData, function (dataItem) {
                 if (!dataItem) {
                     return;
                 }
-                var index = zrUtil.indexOf(axisData, dataItem[dim]);
-                dataItem[dim] = index >= 0 ? index : NaN;
+                var index = zrUtil.indexOf(axisData, dataItem[numberDim]);
+                dataItem[numberDim] = index >= 0 ? index : NaN;
             });
         }
         // FIXME