本文系统地讨论了动作系统的结构,首次提出动作系统的“框架结构”、“微观结构”、“主从结构”和“超稳定结构”的理论。并从人体解剖学,人体生理学和力学等学科角度运用控制论观点较详细地阐述了动作系统的组成和各动作元之间的相互作用关系。同时,还将动作系统结构的理论作为体育教学、训练的生物力学原理结合教学、训练实践描述了多种应用原则。文章最后希望,体育教学和运动训练的工作者应重视该原理的应用价值,借以完善教育和训练体系,提高其质量。 This paper systematically discusses the structure of the motion system and first proposes the theory of “frame structure”, “microstructure”, “master-slave structure” and “ultra-stable structure” of the motion system. And from the point of view of human anatomy, human physiology and mechanics, using the perspective of cybernetics, we elaborate the composition of the motion system and the interaction between each action element. At the same time, it also describes the theory of motion system structure as the teaching principle of physical education, the principle of biomechanics of training combined with teaching and training practice to describe a variety of application principles. Finally, the article hopes that PE teaching and sports training workers should pay attention to the application of the principle of value, so as to improve the education and training system and improve its quality.