采用改进的Rose釜测定了在101.33kPa下,甲醇-二氧六环-NaSCN,甲醇-二氧六环-Nal和甲醇-四氢呋喃-LiCl,甲醇-四氢呋喃-CuCl_2体系的汽液平衡数据.实验结果和热力学基本原理确证了体系的沸点与加入盐浓度间的线性关系,计算了各双液组成下体系的盐效应常数,分析了实验中产生“异常”现象的原因,探讨了溶液内部粒子相互作用的规律,通过用相律、盐效应理论、静电理论、溶剂化理论的解释,得到了一些具有理论价值的结论. Vapor-liquid equilibrium data of methanol-dioxane-NaSCN, methanol-dioxane-NaCl and methanol-tetrahydrofuran-LiCl and methanol-tetrahydrofuran-CuCl_2 system were measured at 101.33 kPa using a modified Rose kettle. And the basic principles of thermodynamics confirm the linear relationship between the boiling point of the system and the salt concentration. The salt effect constants of the system under each two-liquid composition are calculated. The reason of the “abnormal” phenomenon in the experiment is analyzed. The interaction between the particles in the solution By using phase law, salt effect theory, electrostatic theory and solvation theory, some conclusions of theoretical value have been obtained.