“气体性质”是高中热学的重点内容，其中，玻意耳定律是该章的教学难点．本文试就这一难点的形成作些初步的分析，同时结合我们的教改实践提出突破难点的教学设计方案．１难点成因分析 首先，在现行高中物理教材体系中，热学全部安排为必修课，玻意耳定律既是热学的主干知识， “Gas properties” is the focus of high school thermal sciences. Among them, Boyle’s law is the teaching difficulty of this chapter. This article tries to make some preliminary analysis on the formation of this difficult point, and at the same time combines our teaching reform practice to propose breakthrough teaching and design solutions. 1 Analysis of the causes of the difficulties First of all, in the current high school physics teaching material system, thermals are all arranged as required courses, and Boyle’s law is not only the main knowledge of thermal science.