现行教科书中利用针简内装有N2O4及NO2气体做压强对化学平衡影响的实验，多年来对此讨论文章已发表很多，对其存在的问题如颜色变化、热效应、动力学等已给予合理的解释。不足的是对该实验的适宜条件未曾涉及。本文拟从他人研究的基础上，从热力学计算及实验过程分析等方面，对 The current textbook uses the experiment of the effect of pressure on the chemical equilibrium of N2O4 and NO2 gas contained in the needle Jane, which has been published for many years and has given reasonable explanations to its existing problems such as color change, thermal effect and kinetics . The disadvantage is that the appropriate conditions for the experiment have not been involved. Based on the research of others, this article tries to analyze the thermodynamics calculation and experiment process,