Abstract: The aging of concrete dam located on the regions with cold climate is characterized by resorption, destroyed by freeze-thaw and frozen-heave, scouring and etc, but the carbonized depth is low. The freeze-thaw and frozen-heave destruction mainly result from seepage. The practice has shown that the dam body should be covered by concrete outside followed by the steps of anti-seepage and drainage in order to prevent and prolong concrete dam aging.