diff --git a/src/views/statistics/task_rate_gx.vue b/src/views/statistics/task_rate_gx.vue
index 10a11721..5447159c 100644
--- a/src/views/statistics/task_rate_gx.vue
+++ b/src/views/statistics/task_rate_gx.vue
@@ -698,7 +698,7 @@ export default {
 					});
 					count_diff = count_jh - count_ok;
 					option.series.data[0].value = count_ok;
-					option.series.data[1].value = count_diff;
+					option.series.data[1].value = count_diff>0?count_diff:0;
 					let chartId = 'linechart'+mgroup_index;
 					that.setChart(chartId, option);
 				}else{