diff --git a/components/tpx-bluetooth-print/tpx-bluetooth-print.vue b/components/tpx-bluetooth-print/tpx-bluetooth-print.vue
index 0c75ab6..c255508 100644
--- a/components/tpx-bluetooth-print/tpx-bluetooth-print.vue
+++ b/components/tpx-bluetooth-print/tpx-bluetooth-print.vue
@@ -105,6 +105,7 @@ export default {
 		},
 		async confirmPrint(){
 			this.imageUrl.map(async (url, index)=> {
+				url = `${url}?t=${new Date().valueOf()}` // canvas渲染的图必须修改url，否则渲染不出来
 				let imgRes = await this.$refs[`curCanvas${index}`][0].renderCanvasImg(url, this.paperWidth)
 				let res = await this.$refs.curPrint.callPrint({
 					imgRes,