Abstract: Based on The Special Questionnaire Survey on the Population in Poverty-stricken Areas of Hebei Province, this paper concluded that for families that have population outflow, family endowment differences leading to the migration are not fully able to improve family economic status, and family economic effect is not obvious. The family decision of population outflow should be based on the premise of ensuring the basic agricultural production. Then family can arrange the proper population outflow. From the macro aspect, outflow population cannot fully improve the economy of rural areas. The relationship between the scale of the outflow population and the rural economy is inverted U-shaped. The scale is one person in the family is more conducive to the rural economy on average. Based on this, this paper argues that, in the poverty-stricken areas, using the in-situ urbanization and the county transferring to achieve the relative concentration of the population is a considerable measure to realize sustainable development of household and regional economic competitiveness.

Key words: population mobility, economic effect of family, economic effect of society