Abstract: Policy has a huge leading role. A scientific and reasonable adolescent sports policy system is an accelerator for the healthy development of adolescents' mind and body. By means of literature review, text analysis and expert interview, this paper summarizes the evolvement of adolescent sports policy in China since the Reform and Opening-up, and holds that adolescent sports policy in China has undergone three historical periods, namely, adjustment and development period, stable development period, and prosperity and development period since the Reform and Opening-up. Based on the division, the paper analyzes the problems that arose during the evolvement process. The paper then proposes four points for the healthy development of adolescent sports according to the reality of adolescent sports development in China identify the main body of power and responsibility in various organizations, promote cross-sectoral cooperation, monitor and evaluate the long-term mechanism of implementing adolescent sports policies; secure the leading position of "physical education" and work hard on "teaching, training and competition"; increase investment by expand funding channel and encouraging the participation of social forces.