diff --git a/src/views/purchase/purchasingrequisition/UpdateFilesDialog.vue b/src/views/purchase/purchasingrequisition/UpdateFilesDialog.vue
index ba69dbe..3c5d142 100644
--- a/src/views/purchase/purchasingrequisition/UpdateFilesDialog.vue
+++ b/src/views/purchase/purchasingrequisition/UpdateFilesDialog.vue
@@ -9,7 +9,7 @@
 			</div>
 		</template>
 
-		<el-alert title="仅支持上传PDF格式文件，上传新文件将替换原有同类型文件" type="info" :closable="false" style="margin-bottom: 16px" />
+		<el-alert title="仅支持上传PDF格式文件，每个类型仅能上传1个文件，如需更新，请先删除原文件" type="info" :closable="false" style="margin-bottom: 16px" />
 
 		<el-empty v-if="uploadedFileTypes.length === 0" description="该采购申请暂无上传材料" />
 
@@ -21,7 +21,7 @@
 			<el-form-item v-for="item in displayedFileTypes" :key="item.value" :label="item.label">
 				<upload-file
 					v-model="fileMap[item.value]"
-					:limit="5"
+					:limit="1"
 					:file-type="['pdf']"
 					:data="{ fileType: item.value, purchaseId: purchaseId }"
 					upload-file-url="/purchase/purchasingfiles/upload"
@@ -32,8 +32,7 @@
 		</el-form>
 
 		<template #footer>
-			<el-button @click="visible = false">取消</el-button>
-			<el-button type="primary" :loading="submitting" @click="handleSubmit"> 确认更新 </el-button>
+			<el-button @click="visible = false">关闭</el-button>
 		</template>
 	</el-dialog>
 </template>
@@ -132,6 +131,10 @@ const open = async (id: string, no?: string) => {
 const handleUploadSuccess = (res: any, fileType: string) => {
 	if (res && res.data) {
 		useMessage().success('上传成功');
+		// 自动提交更新
+		nextTick(() => {
+			handleSubmit();
+		});
 	}
 };