Family Planning Policy and Second Childhood Family planning policy is a long-term policy implemented by the Chinese government, aiming to control the number and structure of the population and promote the development of the national economy. Under this policy, families who want to have a second child need to meet certain fertility conditions. So, how long is the interval between family planning before having a second child? This article will answer it from four aspects. 1. The development history of family planning policy The family planning policy has been implemented by the Chinese government since the early 1970s. At that time, the government was facing huge population pressure. In order to control the number and structure of the population, it promoted