| In the 21st century, China's population problem is becoming more and more serious. Gender and age structure of population is one of the fundamental causes of conflicts between population and society, economy, resources and environment. This paper reviews the research results of gender-age structure of population at home and abroad, in order to clarify the history, current situation, methods, conclusions and research directions of population gender-age structure. In the study of population gender structure, the research focuses on gender imbalance and its causes, fertility willingness, gender preference, marriage squeeze and other issues, and has formed relatively mature research results; in the study of population age structure, the research focuses on population aging, demographic dividend, pension services and other related issues, and has achieved phased research results. |