diff --git a/web/utils/site.py b/web/utils/site.py
index fb122e447a..d18a1f4dd6 100644
--- a/web/utils/site.py
+++ b/web/utils/site.py
@@ -2391,6 +2391,9 @@ def createAcmeDns(self, site_name, domains, email, dnspai, wildcard_domain, forc
             src_path = mw.getAcmeDomainDir(d)
             src_cert = src_path + '/fullchain.cer'
             src_key = src_path + '/' + d + '.key'
+            if not os.path.exists(src_cert):
+                src_cert = src_path + '/'+d+'.cer'
+
             # src_cert.replace("\\*", "*")
             msg = '签发失败,您尝试申请证书的失败次数已达上限!\
                 <p>1、检查域名是否正确解析到本服务器,或解析还未完全生效</p>\