diff --git a/pages/upload/upload.vue b/pages/upload/upload.vue
index ed0cc41..b3c49bd 100644
--- a/pages/upload/upload.vue
+++ b/pages/upload/upload.vue
@@ -1927,16 +1927,16 @@ export default {
 					this.noIsbnCategoryIndex = 0
 					this.noIsbnSelectedCategoryValue = ''
 				}
-				// 更新出版社
+				// 更新出版社（最多20条）
 				if (pressList.length > 0) {
-					this.noIsbnPublisherOptions = pressList.map(function(item) { return item.showName })
+					this.noIsbnPublisherOptions = pressList.map(function(item) { return item.showName }).slice(0, 20)
 					this.noIsbnPublisherDropdownVisible = true
 				} else {
 					this.noIsbnPublisherOptions = []
 				}
-				// 更新作者
+				// 更新作者（最多20条）
 				if (authorList.length > 0) {
-					this.noIsbnAuthorOptions = authorList.map(function(item) { return item.showName })
+					this.noIsbnAuthorOptions = authorList.map(function(item) { return item.showName }).slice(0, 20)
 					this.noIsbnAuthorDropdownVisible = true
 				} else {
 					this.noIsbnAuthorOptions = []
@@ -3230,9 +3230,13 @@ export default {
 					new: onSaleFacet ? onSaleFacet.newCount : 0,
 					sold: soldFacet ? (soldFacet.oldCount + soldFacet.newCount) : 0
 				}
-				// 填充下拉选项
-				that.noIsbnAuthorOptions = Array.from(authorSet).filter(Boolean).slice(0, 10)
-				that.noIsbnPublisherOptions = Array.from(publisherSet).filter(Boolean).slice(0, 10)
+				// 填充下拉选项（仅当孔网API未拉取时使用历史数据兜底）
+				if (that.noIsbnAuthorOptions.length === 0) {
+					that.noIsbnAuthorOptions = Array.from(authorSet).filter(Boolean).slice(0, 10)
+				}
+				if (that.noIsbnPublisherOptions.length === 0) {
+					that.noIsbnPublisherOptions = Array.from(publisherSet).filter(Boolean).slice(0, 10)
+				}
 				// 自动计算并填入售价
 				that.$nextTick(() => {
 					if (that.calculatedNoIsbnPrice > 0) {