Because China has a large population, and the growth rate is very fast, family planning is regarded as a basic national policy in order to reduce the population and improve the quality of the population. The specific requirements of family planning are to marry later, have fewer children and have good children. Late marriage refers to advocating marriage two to three years later than the legal age for marriage (men should not be earlier than 22 years old and women should not be earlier than 20 years old); Late childbearing is to advocate delaying childbearing for 2 ~ 3 years after marriage; Having fewer children is a stable low fertility level; Eugenics refers to avoiding giving birth to children with genetic diseases through premarital physical examination of young men and women, regular physical examination of pregnant women and scientific delivery.

Therefore, the answer is: family planning; Because our country has a large population and a rapid growth rate, the implementation of family planning is to reduce the population and improve the quality of the population.