In recent years, China's fertility rate has continued to decline is a reality that we have to face, too low fertility rate will have a negative impact on the sustainable development of society. For example, it affects the supply of labor force, weakens the ability of social innovation, reduces the consumption capacity, increases the pressure of pension, and affects social stability. In fact, not only our country, but also the major countries in the world are facing the problem of low fertility. Unlike our family planning policy, most countries have adopted policies to encourage fertility, but the effect of improving fertility is still very little. Therefore, in the face of the severe situation, many experts and scholars have expounded their views and studied whether there are reasonable measures to improve China's fertility rate.

Bowei Wang, Study on the relationship between Counter-urbanization and fertility rate in China. Academic Journal of Humanities & Social Sciences (2019) Vol. 2: 138-143. https://doi.org/10.25236/AJHSS.040035.

[1] Zhang Shanyu, An Introduction to Population Geography, East China Normal University Press, 2004.
[2] Zeng Yi, Gu Baochang, Guo Zhigang, et al., Population and Economic Development of China at Low Fertility Level, Peking University Press, March-25, 2010.
[3] Yan Jianye,'Policy effect or development effect - to examine the actual effect of China's family planning policy', Master's Degree Thesis, Peking University, 2005:3-4, 8-10.
[4] Zeng Yi, Li Ling, Gu Baochang, Lin Yifu, China's Population and Economic Development in the 21st Century, Social Sciences Literature Publishing House, 2006:143-158.