初中物理知识概念性强,较抽象,有的实验在课堂上较难实现,而且费时较多,因此大多数老师都是直接讲述,缺少实验验证,学生理解起来较难,微课指以短小的教学视频为主要载体对某一知识点进行讲解,因此把物理知识结合实验通过微课的形式向学生传达,可以弥补课堂上老师缺乏实验验证的不足,加深学生对物理知识的理解.本研究以声音的产生为例设计一门微课程,体会微课在初中物理学科中的应用.“微课”作为教育领域新的宠儿,突破了传统教育模式的时空限制,具有 Junior high school conceptual physics knowledge is more abstract, some experiments in the classroom more difficult to achieve, and more time-consuming, so most of the teachers are direct, lack of experimental verification, students understand it more difficult, micro-class refers to the short Teaching video as the main carrier of a knowledge point to explain, so the physical knowledge combined with experiments through micro-class form to convey to students, you can make up for lack of classroom teachers lack of experimental verification, to deepen students’ understanding of physical knowledge.This study Sound production as an example to design a micro-curriculum to understand the application of micro-class in junior high school physics. “Micro-class ” as a new darling of education, breaking the time and space constraints of the traditional education model, with