Abstract: Since the reform and opening up, with the rapid development of China's market-oriented economic reforms and urbanization, the rural surplus population has continued to flow into cities for employment and development. On the one hand, they get higher economic income than in the countryside; on the other, some of them are prone to poverty due to institutional exclusion and deficiency of capacity. With the tremendous achievements made in the rural poverty alleviation battle, our country's poverty alleviation work is entering a post-poverty alleviation era, so the problem of urban floating population poverty is getting on the policy agenda. CFPS data are used in this study to measure the degree of and factors in inter-generational transmission of poverty among urban floating population. It is found that the inter-generational income elasticity coefficient of the urban floating population is 0.2 and there is a significant inter-generational transmission. The inter-generational transmission of poverty among the urban floating population is affected not only by the ascribing factors but also by the self-inducing factors. Based on these findings, the "status acquisition model" and the analysis framework in this study is revised and improved.