Based on the survey data of CHNS database over the years, this paper examines the poverty reduction efficiency of government assistance and public service for urban and rural migrating population. It is found that public service can significantly reduce poverty for urban and rural migrating population; government cash assistance has a significant effect on the individual income of relatively poor urban and rural migrating population, and the effect of poverty reduction is different due to internal differentiation of poor migrating population. Government cash assistance and public service can s...