“验证力的平行四边形定则”是物理实验教学和学生理论学习的重要内容,此实验也是高中学生必修的实验之一。本文对原有的“验证力的平行四边形定则”的实验进行了改进,对改进前后实验装置的优缺点进行了对比分析,展示了新装置在高中物理课堂教学中的应用实例。 “Parallelogram of verification force ” is an important part of physics experiment teaching and student theory study. This experiment is also one of the compulsory experiments for high school students. In this paper, the original experiment of “parallelogram of verification force” was improved. The advantages and disadvantages of the experimental device before and after the improvement were compared and analyzed, and the application of the new device in high school physics classroom teaching was demonstrated.