Abstract: In the face of the prevailing of lifestyle diseases, the Chinese government has launched a special project on“Proactive Health”to explore a solution to curb the worsening of chronic diseases in China. This research summarized its unique disciplinary characteristics and tried to give a definition of“Proactive Health”based on the thinking at that time, which also combing the development of modern medical model and facing the coming new scientific and technological revolution.“Proactive Health”is based on the scientific theory of complexity, the human body can form self-organizing behavior far away from the equilibrium state,and propose to increase the complexity of the human body by actively exerting controlled stimulation to the human body, so as to achieve the goal of health intervention.“Proactive Health”is an important direction of future medical development and it will form a new model of co-development with modern disease medicine. At the same time, although sports science is an important part of“Proactive Health”, sports science still needs basic theoretical innovation based on complex systems, big data and AI technology according to the requirements of“Proactive Health”medicine and the trend of future scientific and technological development.