diff --git a/README.md b/README.md
index 7b00fe5..7d066cb 100644
--- a/README.md
+++ b/README.md
@@ -50,11 +50,11 @@ for CentOS, mirror lists are here:
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-**-ssh**: you can pre-specify ssh port of system, range is 1~65535.
+**-ssh**: you can pre-specify ssh port of system, range is 1~65535, **default is '22'**.
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-**-p**: you can pre-specify ssh password of system, default is 'LeitboGi0ro'.
+**-p**: you can pre-specify ssh password of system, **default is 'LeitboGi0ro'**.
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