The article discusses about various issues related to the U.S. security policy on China. This discussion shows that, from China's perspective, the key to improving the U.S.-China relations is not stressing common interests in reality, but stressing China's long-term goodwill. The most important issue in the U.S.-China security relations is Taiwan issue. When dealing with Taiwan issue, China should also take into account how to influence the U.S. concerns about gains. The U.S., therefore, might adopt a more co-operative policy on China.