|（1.Research Department，Jilin Sport University，Changchun 130022，China；2.Sports Industry Research Base，Jilin Sport University，Changchun 130022，China；3.Graduate Department，Jilin Sport University，
Abstract: Based on the dynamic “systematology”, the authors considered the coupling coordination degree of competitive sports subsystems and social sports subsystems as the foundation for the coevolution of sports under-taking composite systems, dissected the degree of order level, coupling coordination degree and coevolution condi-tion of the two in the process of coevolution by basing subsystem synergy path guidance on “the synergetic theory” and by applying data model establishment and dynamic simulation methods, and on the basis of describing the per-formance of such dynamic evolution, adjusted the strategies for the simulation and synergy of the sports undertaking composite system. The research results show the followings: the degree of order level of competitive sports in China shows a fluctuating trend overall, the degree of order level of social sports maintains a steadily rising trend, and there is stable mutual dependence between both subsystems, the sports undertaking composite systems of Tianjin, Hebei, Shanxi, Liaoning, Heilongjiang and Jiangxi are in a non-synergetic condition, other regions are in a ex-tremely low level synergetic condition. System dynamic simulation results show that strengthening government supporting and cultivating strategies, enhancing social sports organization service load bearing capacity strategies, and strengthening social supervision and market activity strategies, are effective methods for realizing the synergetic development of competitive sports and social sports in terms of theory and practice.
Key words: competitive sports；social sports；composite system synergy degree model；system dynamics