Based on the overview of concept of returning-home migrant workers’ entrepreneurship, the thesis has introduced the features of migrant workers’ entrepreneurship, as against other types of entrepreneurship, as follows. Starting from a low base and multi-level perspective; conducting entrepreneurship in manifold industries, mainly in those labor-intensive enterprises; conspicuous mutual interaction and reversibility are embodied in the group characteristics; the strong driving force of returning-home migrant workers’ entrepreneurship comes from their affection for hometown. The process of returning-home migrant workers’ entrepreneurship can be divided into three stages, namely returning rush, investing rush, and entrepreneurship rush, on which we give the analysis respectively in terms of the continuous change of social mobility, transformation on the part of the main body of entrepreneurship, and the expansion of industry field concerning entrepreneurship. More over, we have discussed the methods of constructing the legal support system for the returning-home migrant workers’ entrepreneurship. Firstly, it needs institutionalization, which is the basis of constructing the legal support system for the returning-home migrant workers’ entrepreneurship; secondly, it needs definite guiding ideology as the premise of constructing the legal support system for the returning-home migrant workers’ entrepreneurship; thirdly, it needs the precise orientation of target group as the key of constructing the legal support system for the returning-home migrant workers’ entrepreneurship; finally, appropriate support methods are the pivot of constructing the legal support system for the returning-home migrant workers’ entrepreneurship.