diff --git a/core/core-frontend/src/utils/canvasUtils.ts b/core/core-frontend/src/utils/canvasUtils.ts
index 2fda5b031b..e1c6ffa0bd 100644
--- a/core/core-frontend/src/utils/canvasUtils.ts
+++ b/core/core-frontend/src/utils/canvasUtils.ts
@@ -1122,7 +1122,7 @@ const mapChartTypes = ['bubble-map', 'flow-map', 'heat-map', 'map', 'symbolic-ma
  */
 export function getMapElementIds(canvasDataPreview) {
   const mapElementIds = []
-  canvasDataPreview.forEach(item => {
+  canvasDataPreview?.forEach(item => {
     if (mapChartTypes.includes(item.innerType)) {
       mapElementIds.push(item.id)
     }
diff --git a/core/core-frontend/src/utils/imgUtils.ts b/core/core-frontend/src/utils/imgUtils.ts
index e0a716a334..c800888ef2 100644
--- a/core/core-frontend/src/utils/imgUtils.ts
+++ b/core/core-frontend/src/utils/imgUtils.ts
@@ -117,7 +117,7 @@ export function downloadCanvas(type, canvasDom, name, callBack?) {
 }
 
 export function downloadCanvas2(type, canvasDom, name, callBack?) {
-  domToPng(canvasDom)
+  domToPng(canvasDom, { scale: 3 })
     .then(dataUrl => {
       if (type === 'img') {
         const a = document.createElement('a')
diff --git a/core/core-frontend/src/views/chart/components/js/panel/common/common_antv.ts b/core/core-frontend/src/views/chart/components/js/panel/common/common_antv.ts
index 415a07c2d3..c874a48921 100644
--- a/core/core-frontend/src/views/chart/components/js/panel/common/common_antv.ts
+++ b/core/core-frontend/src/views/chart/components/js/panel/common/common_antv.ts
@@ -1630,7 +1630,7 @@ export function getMapObject(
         zoom: basicStyle.autoFit === false ? basicStyle.zoomLevel : undefined,
         showLabel: !(basicStyle.showLabel === false), //不支持
         WebGLParams: {
-          preserveDrawingBuffer: true
+          preserveDrawingBuffer: true // 不支持
         }
       })
     case 'qq':
@@ -1641,7 +1641,7 @@ export function getMapObject(
         center,
         zoom: basicStyle.autoFit === false ? basicStyle.zoomLevel : 12,
         showLabel: !(basicStyle.showLabel === false),
-        WebGLParams: {
+        renderOptions: {
           preserveDrawingBuffer: true
         }
       })
diff --git a/core/core-frontend/src/views/dashboard/DashboardPreviewShow.vue b/core/core-frontend/src/views/dashboard/DashboardPreviewShow.vue
index 98fb8923c0..cab3f2deae 100644
--- a/core/core-frontend/src/views/dashboard/DashboardPreviewShow.vue
+++ b/core/core-frontend/src/views/dashboard/DashboardPreviewShow.vue
@@ -139,7 +139,7 @@ const downloadH2 = type => {
   downloadStatus.value = true
   const mapElementIds = getMapElementIds(state.canvasDataPreview)
   mapElementIds.forEach(id => useEmitt().emitter.emit('l7-prepare-picture', id))
-  nextTick(() => {
+  setTimeout(() => {
     const vueDom = previewCanvasContainer.value.querySelector('.canvas-container')
     downloadCanvas2(type, vueDom, state.dvInfo.name, () => {
       downloadStatus.value = false
@@ -150,7 +150,7 @@ const downloadH2 = type => {
       type === 'img' ? exportLogImg(param) : exportLogPDF(param)
       mapElementIds.forEach(id => useEmitt().emitter.emit('l7-unprepare-picture', id))
     })
-  })
+  }, 1000)
 }
 
 const downloadAsAppTemplate = downloadType => {
@@ -192,7 +192,7 @@ const fileDownload = (downloadType, attachParams) => {
   downloadStatus.value = true
   const mapElementIds = getMapElementIds(state.canvasDataPreview)
   mapElementIds.forEach(id => useEmitt().emitter.emit('l7-prepare-picture', id))
-  nextTick(() => {
+  setTimeout(() => {
     const vueDom = previewCanvasContainer.value.querySelector('.canvas-container')
     download2AppTemplate(downloadType, vueDom, state.dvInfo.name, attachParams, () => {
       downloadStatus.value = false
@@ -203,7 +203,7 @@ const fileDownload = (downloadType, attachParams) => {
       downloadType === 'app' ? exportLogApp(param) : exportLogTemplate(param)
       mapElementIds.forEach(id => useEmitt().emitter.emit('l7-unprepare-picture', id))
     })
-  })
+  }, 1000)
 }
 
 const slideOpenChange = () => {
diff --git a/core/core-frontend/src/views/data-visualization/PreviewShow.vue b/core/core-frontend/src/views/data-visualization/PreviewShow.vue
index 15c1306a3d..9dc02186c6 100644
--- a/core/core-frontend/src/views/data-visualization/PreviewShow.vue
+++ b/core/core-frontend/src/views/data-visualization/PreviewShow.vue
@@ -145,7 +145,7 @@ const fileDownload = (downloadType, attachParams) => {
   downloadStatus.value = true
   const mapElementIds = getMapElementIds(state.canvasDataPreview)
   mapElementIds.forEach(id => useEmitt().emitter.emit('l7-prepare-picture', id))
-  nextTick(() => {
+  setTimeout(() => {
     const vueDom = previewCanvasContainer.value.querySelector('.canvas-container')
     download2AppTemplate(downloadType, vueDom, state.dvInfo.name, attachParams, () => {
       downloadStatus.value = false
@@ -156,7 +156,7 @@ const fileDownload = (downloadType, attachParams) => {
       downloadType === 'app' ? exportLogApp(param) : exportLogTemplate(param)
       mapElementIds.forEach(id => useEmitt().emitter.emit('l7-unprepare-picture', id))
     })
-  })
+  }, 1000)
 }
 
 const downloadAsAppTemplate = downloadType => {