diff --git a/packages/layers/src/line/models/arc.ts b/packages/layers/src/line/models/arc.ts
index 58a06f1304..3d8fcc124b 100644
--- a/packages/layers/src/line/models/arc.ts
+++ b/packages/layers/src/line/models/arc.ts
@@ -33,6 +33,7 @@ export default class ArcModel extends BaseModel {
       forward = true,
       lineTexture = false,
       iconStep = 100,
+      segmentNumber = 30,
     } = this.layer.getLayerConfig() as ILineLayerStyleOptions;
 
     if (this.dataTextureTest && this.dataTextureNeedUpdate({ opacity })) {
@@ -89,7 +90,7 @@ export default class ArcModel extends BaseModel {
 
       u_opacity: isNumber(opacity) ? opacity : 1.0,
       u_textureBlend: textureBlend === 'normal' ? 0.0 : 1.0,
-      segmentNumber: 30,
+      segmentNumber,
       u_line_type: lineStyleObj[lineType || 'solid'],
       u_dash_array: dashArray,
       u_blur: 0.9,
diff --git a/packages/layers/src/line/models/arc_3d.ts b/packages/layers/src/line/models/arc_3d.ts
index f0d8f4e823..c4428e4a64 100644
--- a/packages/layers/src/line/models/arc_3d.ts
+++ b/packages/layers/src/line/models/arc_3d.ts
@@ -31,6 +31,7 @@ export default class Arc3DModel extends BaseModel {
       dashArray = [10, 5],
       lineTexture = false,
       iconStep = 100,
+      segmentNumber = 30,
     } = this.layer.getLayerConfig() as ILineLayerStyleOptions;
 
     if (dashArray.length === 2) {
@@ -87,7 +88,7 @@ export default class Arc3DModel extends BaseModel {
       // u_opacity: opacity === undefined ? 1 : opacity,
       u_opacity: isNumber(opacity) ? opacity : 1.0,
       u_textureBlend: textureBlend === 'normal' ? 0.0 : 1.0,
-      segmentNumber: 30,
+      segmentNumber,
       u_line_type: lineStyleObj[lineType as string] || 0.0,
       u_dash_array: dashArray,
 
diff --git a/packages/layers/src/line/models/great_circle.ts b/packages/layers/src/line/models/great_circle.ts
index aeb6c06ac7..492d8442df 100644
--- a/packages/layers/src/line/models/great_circle.ts
+++ b/packages/layers/src/line/models/great_circle.ts
@@ -34,6 +34,7 @@ export default class GreatCircleModel extends BaseModel {
       dashArray = [10, 5],
       lineTexture = false,
       iconStep = 100,
+      segmentNumber = 30,
     } = this.layer.getLayerConfig() as Partial<ILineLayerStyleOptions>;
     // console.log('opacity', opacity)
     if (dashArray.length === 2) {
@@ -90,7 +91,7 @@ export default class GreatCircleModel extends BaseModel {
       // u_opacity: opacity === undefined ? 1 : opacity,
       u_opacity: isNumber(opacity) ? opacity : 1.0,
       u_textureBlend: textureBlend === 'normal' ? 0.0 : 1.0,
-      segmentNumber: 30,
+      segmentNumber,
       u_line_type: lineStyleObj[lineType as string] || 0.0,
       u_dash_array: dashArray,
 
diff --git a/stories/Map/components/amap2demo_arcLine.tsx b/stories/Map/components/amap2demo_arcLine.tsx
index 991bc8bff7..698500b426 100644
--- a/stories/Map/components/amap2demo_arcLine.tsx
+++ b/stories/Map/components/amap2demo_arcLine.tsx
@@ -44,8 +44,9 @@ export default class Amap2demo_arcLine extends React.Component {
             .style({
               opacity: 0.8,
               blur: 0.99,
-              lineType: 'dash',
-              dashArray: [5, 5],
+              segmentNumber: 30
+              // lineType: 'dash',
+              // dashArray: [5, 5],
             });
           // .forward(false)
           scene.addLayer(layer);