diff --git a/src/components/course-item/course-item.vue b/src/components/course-item/course-item.vue
index a0b4dba4..ad8d701d 100644
--- a/src/components/course-item/course-item.vue
+++ b/src/components/course-item/course-item.vue
@@ -1,7 +1,7 @@
 <template>
 	<view class="course-item-box" @click="clickItem">
 		<view class="img-box-view">
-			<ImagePreview class="img-box" :imgId="itemInfo.imgId" :isCache="true" width="225" height="170" mode="aspectFill"></ImagePreview>
+			<ImagePreview class="img-box" :imgId="itemInfo.imgId" :isCache="true" width="225" height="170" mode="scaleToFill"></ImagePreview>
 			<view class="item-grade">{{itemInfo.evalGrade}}</view>
 			<!-- <image class="item-grade" mode="aspectFill"></view> -->
 		</view>