There are numerous migrant workers in China. They are neither separated from the countryside completely, nor integrated into the city wholly. Therefore, they are not equal with the citizens in the right for fit-keeping. There remains a long-time unsolved problem as to develop migrant workers' fit-keeping. Through analyzing and studying the factors that influence their fit-keeping exercises, considering their present situation, finding out reasons that restrict the development of their fit-keeping, the article tries to explore the developmental strategies concerning migrant workers' fit-keeping, to better solve the problem, and to let more of them participate in the fit-keeping exercises effectively.