diff --git a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java
index 4b990c1d..4dfbc5ef 100644
--- a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java
+++ b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java
@@ -197,25 +197,30 @@ public class EssService {
 
     @BizTransactional
     public void downloadContractPDF(EssContract contract, boolean retryDownload) {
-        if (StringUtils.isNotBlank(contract.getOssFileKey()) && !retryDownload) {
-            log.info("合同已下载PDF, contract={}", contract);
+        EssContract reload = essContractDao.findForUpdateOrNull(contract.getEssContractId());
+        if (reload == null) {
+            log.warn("合同不存在, essContractId={}", contract.getEssContractId());
             return;
         }
-        if (!shouldDownloadContractPDF(contract)) {
-            log.info("合同不需要下载PDF, contract={}", contract);
+        if (StringUtils.isNotBlank(reload.getOssFileKey()) && !retryDownload) {
+            log.info("合同已下载PDF, contract={}", reload);
+            return;
+        }
+        if (!shouldDownloadContractPDF(reload)) {
+            log.info("合同不需要下载PDF, contract={}", reload);
             return;
         }
         try {
-            String pdfUrl = getContractPDFUrlFromEss(contract);
-            String fileName = String.format("%s.pdf", contract.getContractName());
+            String pdfUrl = getContractPDFUrlFromEss(reload);
+            String fileName = String.format("%s.pdf", reload.getContractName());
             String fileKey = ossService.uploadToOss(pdfUrl, fileName);
-            essContractDao.setOssFileKey(contract, fileKey);
-            essLogDao.log("uploadContractToOss", contract.getEssContractId(),
+            essContractDao.setOssFileKey(reload, fileKey);
+            essLogDao.log("uploadContractToOss", reload.getEssContractId(),
                     "ossFileKey", fileKey, "forceDownload", retryDownload);
-            log.info("上传合同到OSS成功, essContractId={}", contract.getEssContractId());
+            log.info("上传合同到OSS成功, essContractId={}", reload.getEssContractId());
         } catch (Exception e) {
             log.warn("上传合同到OSS失败", e);
-            essLogDao.log(e, "uploadContractToOss", contract.getEssContractId());
+            essLogDao.log(e, "uploadContractToOss", reload.getEssContractId());
         }
     }