The countervailing investigations by USW in September 2010 aiming at China's renewable energy industry have pulled Cinal into a dilemma. It's necessary to estimate correctly our policies as well as that of our opponent，if we hope to break through under such pressure.Through sorting out all the policies for China's renewable energy，this paper is aimed to clarify the policies for renewable energy industry of China and analyze relevant content accused by USW and the compatibility with ASCM of WTO.Also，we point out the present situation and features of renewable energy subsidy of U.S. through deeply analyzing of its corresponsive polices. Thus we draw valuable lessons and inspiration from the comparison，providing the policy space for China government to face the pressure.