微元法,就是小量研究.它是一个从部分到整体的思维方法,通过研究物理模型或物理过程的一小部分,用我们熟悉的物理规律迅速地推导出整个过程中的物理规律的物理方法.能起到简化物理知识、拓展知识点、增强思维严密性的作用.又能在高中阶段初步了解微积分知识,为大学普通物理奠定基础.微元法的思想,在高中物理教材中有不同程度的体现.笔者归纳了部分知识点,从极限、微分和应用三个角度一起与大家共享. Microelement method is a small amount of research.It is a part to the overall method of thinking, by studying the physical model or a small part of the physical process, with our familiar physical laws quickly deduced the physical process of physics throughout the process Method can play the role of simplifying the physical knowledge, expanding the knowledge point, enhance the tightness of thinking, but also in the high school stage preliminary understanding of calculus knowledge, lay the foundation for the university general physics.The idea of ​​the micro element method in high school physics teaching material Different degrees of expression.The author summarizes some of the knowledge points, from the limit, differential and application of three angles to share with you.