Although the idea of Liangji Hong of the population lack any trace of the traditional Chinese idea of population,but living in the Qianlong,Jiaqing stable and peaceful years;noted that the problem of rapid population growth and noted that the rate of population growth and housing,land and so the relationship between the increase of social wealth,and the consequences of rapid population growth;to put forward the jun-phase swap method and other measures to solve the population problem,the strategy we either ran today,be learned.Thus,the population in modern China,he thought,should be a place.In this paper,the population from the Liangji Hong thoughts and ideas of ancient Chinese population,the relationship between population growth and the relationships between the population growth and economic,to solve the population problems and their practical significance elaborate.