China's urbanization has entered the second phase of the rural migrant workers to become urban citizens. Based on the survey of 800 rural migrant workers in Jiangsu province, the factors affecting the willingness of migrant workers' becoming urban citizens are the topic discussed in this essay through factor analysis and logit analysis. We found that the most influencing factor on the willingness of citizenization is job satisfaction, the second one is living satisfaction. According to the analysis in the early parts, measures to promote the citizenization of migrant workers include the policies on “Hukou”, employment, education and training, housing.