本文研究了有机化学教学中有机反应机理教学的问题．从亲核，亲电历程的基本出发点，以分子结构的本质属性为依据，在分子中电子云密度分布情况以电子效应为主线，分析和概括了各类反应机理。从而找出有机反应机理教学的切入口和关键点，为学生灵活掌握各类有机反应机理，并应用有机反应机理系统，掌握有机化学知识，也为推理判断一些新的有机反应的发生提供理论依据。 This paper studies the teaching of organic reaction mechanism in organic chemistry teaching. From the basic starting point of nucleophilic and electrophilic processes, based on the essential properties of the molecular structure, the distribution of electron cloud density in the molecule takes the electronic effect as the main line, and various reaction mechanisms are analyzed and summarized. And thus find out the cutting-edge and key points in the teaching of organic reaction mechanism for students to grasp all kinds of organic reaction mechanism, and the application of organic reaction mechanism system, grasp of organic chemistry knowledge, but also for reasoning to determine the occurrence of some new organic reactions provide a theoretical basis .