Abstract: Summary: social capital and human capital are important factors for the impact of income inequality. Based on the survey of 3,083 migrant workers from 21cities in Guangdong province, the paper describes the overall situation of migrant workers income in Guangdong Province, income inequality, the employment status of human capital and social capital, and analyse the causes of inequality and poverty.The study found some conclusions, such as the migrant workers’ income Gini coefficients is in the reasonable range and it is significantly lower than the national overall Gene coefficient; the gap of migrant workers’ income inequality is not large between various regions; Human capital is the most important factor leading to income inequality and cultural factors pay great unequal contribution in the human capital variables. To this end, the paper put forward some policy suggestions, such as increasing investment in education, strengthening the training of migrant workers, and improving the overall level of education and skill levels; Strengthening the social security of migrant workers; enhancing the employability of migrant workers; promoting equal access to basic services in the city ,and then improving income inequality.