Through VAR impulse response function, this paper tries to make empirical considerations using government finance during 1992--2013 on the dynamic effect of urbanization of migrant workers. The results show that urban fixed assets bring bidirection- al impact to the urbanization of migrant workers, but the positive effect is more significant. The positive effect of social security on ur- banization of migrant workers weakens gradually. The science-education-culture-health expenditure has positive and durable influence on the urbanization of rural migrant workers. It has negative impact in the ...