diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/InvoiceReceiptServiceImpl.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/InvoiceReceiptServiceImpl.java
index 823337ea..96e9ed49 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/InvoiceReceiptServiceImpl.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/InvoiceReceiptServiceImpl.java
@@ -1244,13 +1244,21 @@ public class InvoiceReceiptServiceImpl extends BaseServiceImpl<InvoiceReceiptMap
 	}
 
 	private String buildAttachmentJson(BfiInvoicePoolVO row) {
-		if (Func.isEmpty(row.getDownloadUrl())) {
+		// 数电票 downloadUrl 可能是 OFD 版式（fileType=4，ZIP 容器），前端按扩展名选预览器：
+		// 依次取 PDF 版式地址（taxPdfUrl/pdfurl，A801-1 样例中两者互有空缺），都缺才用 downloadUrl 并按 fileType 命名
+		String path = Func.isBlank(row.getTaxPdfUrl()) ? row.getPdfurl() : row.getTaxPdfUrl();
+		boolean fromPdfField = !Func.isBlank(path);
+		if (!fromPdfField) {
+			path = row.getDownloadUrl();
+		}
+		if (Func.isBlank(path)) {
 			return null;
 		}
+		boolean ofdOnly = !fromPdfField && "4".equals(row.getFileType());
 		Map<String, Object> attachment = new LinkedHashMap<>();
 		attachment.put("source", "piaozone");
-		attachment.put("path", row.getDownloadUrl());
-		attachment.put("name", row.getInvoiceNo() + ".pdf");
+		attachment.put("path", path);
+		attachment.put("name", row.getInvoiceNo() + (ofdOnly ? ".ofd" : ".pdf"));
 		return JsonUtil.toJson(attachment);
 	}