Abstract: The efficacy of scientific and technological (S&T) policy depends on the completeness of policy system and effectiveness of each policy. To inspect the whole effectiveness of S&T policy of China, the first question is to make sure whether S&T policy is complete. With an analytical framework of scientific and technological innovation chains,the paper hackles and analyzes 339 S&T policies since 2006 from three aspects:policy numbers, policy grade and policy target. The study finds that there is a full-order system of S&T policy in China currently, which nearly covers each link of scientific and technological innovation chain. However, there is still room for further improvement. For instant, the number of policies in application research is not sufficient, and there is no specific policy support for industry-university-research cooperation.