diff --git a/web/utils/file.py b/web/utils/file.py
index 694301892..5f3315c46 100644
--- a/web/utils/file.py
+++ b/web/utils/file.py
@@ -309,6 +309,8 @@ def zip(sfile, dfile, stype, path):
         elif stype == 'tar_gz':
             mw.execShell("cd '" + path + "' && tar -zcvf '" + dfile + "' " + sfile + " > " + tmps + " 2>&1")
         elif stype == 'xz':
+            if not mw.checkBinExist('xz'):
+                return mw.returnData(False, 'xz压缩命令不存在，请安装!')
             cmd = "cd '" + path + "' && tar -cvf '" + dfile + ".tar' " + sfile + " && xz -z '" + dfile + "' > " + tmps + " 2>&1"
             mw.execShell(cmd)
         elif stype == 'rar':