var circle = new AMap.Circle({
                    center: [经纬，纬度],
                    radius: 1000, //半径
                    borderWeight: 3,
                    strokeColor: "#FF33FF",
                    strokeOpacity: 1,
                    strokeWeight: 6,
                    strokeOpacity: 0.2,
                    fillOpacity: 0.3,
                    strokeStyle: 'dashed',
                    strokeDasharray: [10, 10],
                    // 线样式还支持 'dashed'
                    fillColor: 'red',
                    zIndex: 50,

                })
                this.circle.setMap(map)
                // // 缩放地图到合适的视野级别
                map.setFitView([ this.circle ])

 map.remove(this.circle);