Based on a survey of 339 new generation migrant workers in 30 villages from Shaanxi,Gansu and Ningxia in northwest China,this paper uses statistic inductive and SPSS16.0 software to analyze the occupation transition and influencing factors of these migrant workers with the purpose of giving some references for the improvement of new generation migrant worker’s occupation status quo.The result shows that occupation transition of new generation migrant workers is decided under particular environment.Training experiences,marriage status,gender and city scale have a significant impact on their occupation transition,and working years,educational level,spouse income,family total income and regional policy also play a significant factor.While age and proportion of nonfarming income in the family total income don’t have obvious effect on occupation transition of new generation migrant workers.