In this paper,we use the CGSS2010 survey data to focus on the impact of the urban dwelling quality of migrant workers on the changes of their marriage.By using factor analysis,this paper concludes that the residential building quality of migrant workers is composed of environmental factors,social capital factors,safety factors and socio-cultural factors of the dwelling districts.Regression results show that the social capital factors and socio-cultural factors of dwelling districts have significant positive effect on their marriage;environmental factor and safety factor have no significant influence.In addition,as the improvement of living space and age growth,marriage tends to be stable and meanwhile it is found there is the boundary decreasing effect on the living space of the migrant workers.