楞次定律是高中物理电磁感应部分的重点内容,但又是一个难点,表现为学生理解困难.不会应用,为了突破难点,便于学生理解应用,笔者将楞次定律归纳为四种类型,分类学习,全面深刻理解应用楞次定律. Lenz’s law is the focus of high school physics electromagnetic induction part, but it is a difficult point, manifested as difficult for students to understand. Will not be applied, in order to break through the difficulties and facilitate students to understand the application, the author will be Lenz’s law into four types, classification Study, comprehensively and profoundly understand Lenz’s law of application.