Abstract: Changing low fertility in China is a key point in the present social research. The adjustment and transformation process of security policy of fertility in China-Taiwan may provide reference for China-mainland. Using the problem-centered policy analysis framework, this study analyzes the major security policy of fertility in China-Taiwan over the past 10 years. The results show that the government of China-Taiwan chose the policy after a long period of control policy. Reproductive security policies such as economic guarantee and service demand security were also formulated. However, the effect was not satisfactory. There are also some problems in the system. For the Mainland, government can draw lessons from China-Taiwan, and thus to build a security system of fertility matching Chinese economy level and Chinese characteristics well.