diff --git a/src/geom/material/pointMaterial.js b/src/geom/material/pointMaterial.js
index 8f848190f0..c4bd19bc0b 100644
--- a/src/geom/material/pointMaterial.js
+++ b/src/geom/material/pointMaterial.js
@@ -1,4 +1,4 @@
-import * as THREE from '../../core/three';
+
 import Material from './material';
 import { getModule } from '../../util/shaderModule';
 export default class PointMaterial extends Material {
@@ -26,7 +26,7 @@ export default class PointMaterial extends Material {
     this.vertexShader = vs;
     this.fragmentShader = fs;
     this.transparent = true;
-    if (!this.uniforms.shape) { this.blending = THREE.AdditiveBlending; }
+    // if (!this.uniforms.shape) { this.blending = THREE.AdditiveBlending; }
     if (this.uniforms.u_texture) {
       this.defines.TEXCOORD_0 = true;
     }
diff --git a/src/layer/tile/tileLayer.js b/src/layer/tile/tileLayer.js
index 9b46575721..867429d6a3 100644
--- a/src/layer/tile/tileLayer.js
+++ b/src/layer/tile/tileLayer.js
@@ -90,8 +90,8 @@ export default class TileLayer extends Layer {
     const zoom = Math.floor(this.scene.getZoom()) - 1;
     const minZoom = this.get('minZoom');
     const maxZoom = this.get('maxZoom');
-    const minSourceZoom = this.get('minSourceZoom');
-    const maxSourceZoom = this.get('maxSourceZoom');
+    const minSourceZoom = this.tileSource.get('minSourceZoom');
+    const maxSourceZoom = this.tileSource.get('maxSourceZoom');
     const currentZoom = this.scene.getZoom();
     this.tileZoom = zoom > maxSourceZoom ? maxSourceZoom : zoom;
     if (currentZoom < minZoom || currentZoom >= maxZoom || currentZoom < minSourceZoom) {
diff --git a/src/layer/tile/vectorTile.js b/src/layer/tile/vectorTile.js
index 6508081caf..0f3d9d6564 100644
--- a/src/layer/tile/vectorTile.js
+++ b/src/layer/tile/vectorTile.js
@@ -55,7 +55,7 @@ export default class VectorTile extends Tile {
         context.disable(context.STENCIL_TEST);
       };
       this._object3D.add(this.mesh);
-    } else {
+    } else { // 如果是热力图
       this._object3D = this.mesh;
     }
     setTimeout(() => {
diff --git a/src/source/tileSource.js b/src/source/tileSource.js
index 1c85a7c26b..24488e982f 100644
--- a/src/source/tileSource.js
+++ b/src/source/tileSource.js
@@ -78,7 +78,7 @@ export default class TileSource extends Source {
     });
   }
   tileDestroy(tile) {
-    if (!tile || !tile.data || tile.loading) {
+    if (!tile || !tile.data || tile.loading || !tile.data.data.dataArray) {
       return;
     }
     const tileData = tile.data;