diff --git a/src/pages/course/course-type-radar/course-type-radar.ts b/src/pages/course/course-type-radar/course-type-radar.ts
index 4073187..bb59013 100644
--- a/src/pages/course/course-type-radar/course-type-radar.ts
+++ b/src/pages/course/course-type-radar/course-type-radar.ts
@@ -69,6 +69,24 @@ export default class CourseTypeRadar extends Vue
                     {
                         name: 'Score',
                         symbol: 'circle',
+                        areaStyle:
+                        {
+                            color:
+                            {
+                                type: 'radial',
+                                x: 0.5,
+                                y: 0.5,
+                                r: 0.5,
+                                colorStops:
+                                [
+                                    {offset: 0, color: '#ffa0a0'},
+                                    {offset: 0.5, color: '#fffead'},
+                                    {offset: 1, color: '#d1ffde'}
+                                ],
+                                global: false // 缺省为 false
+                            },
+                            opacity: 0.2
+                        },
                         value: this.course.assignmentTypes.map(t => t.score)
                     }
                 ]