diff --git a/hybrid/html/web/viewer.html b/hybrid/html/web/viewer.html
index 61f86b0..d208332 100644
--- a/hybrid/html/web/viewer.html
+++ b/hybrid/html/web/viewer.html
@@ -497,7 +497,10 @@ See https://github.com/adobe-type-tools/cmap-resources
 		let second = params % 60;
 		let time = minute + ':' + second;
 		let interval = setInterval(() => {
-			if (time == 0) {
+			params -= 1;
+			console.log('params:',params)
+
+			if (params <= 0) {
 				clearInterval(interval);
 				document.getElementById('tip').innerText = '已完成学习';
 			} else {
@@ -508,12 +511,15 @@ See https://github.com/adobe-type-tools/cmap-resources
 					minute -= 1;
 					second = 59;
 					if (minute < 10) {
-						minute = '0' + minute;
+						minute = String(minute).padStart(2, '0');
 					}
 				} else {
 					second -= 1;
+					if (minute < 10) {
+						minute = String(minute).padStart(2, '0');
+					}
 					if (second < 10) {
-						second = '0' + second;
+						second = String(second).padStart(2, '0');
 					}
 				}
 				time = minute + ':' + second;
diff --git a/pages/YNEduApp/learnProj/pdfStudy.vue b/pages/YNEduApp/learnProj/pdfStudy.vue
index 4f3314a..fdaa579 100644
--- a/pages/YNEduApp/learnProj/pdfStudy.vue
+++ b/pages/YNEduApp/learnProj/pdfStudy.vue
@@ -33,7 +33,7 @@ export default {
       console.log('🚀 ~ onLoad ~ surplusTime:', this.surplusTime)
       setTimeout(() => {
         this.countDown()
-      }, 1300)
+      }, 1000)
     } else {
       this.surplusTime = 0
       // 提示-学习时长已满