In order to distill the Methylacetate-Methanol system which has an azeotropic point at 53.8 ℃, several extractive solvents such as ethanol, propanol, buthanol and buthylacetate were used. These ternary systems, MeAc-MeOH-Solvents, were distilled and recycled in a Smith-Bonner type apparatus for 30-50 min and then, samples of each outlet were analyzes by gas chromatography. Liquid-vapor equilibrium data for each solvent were measured according to the various concentrations. Propanol as extraction solvent is the best one in a series of these systems, referring to the equilibrium curves, and also to the relationship of relative volatility and solvent concentration. As the latter relationship shows a nearly straight line, it may be concluded that this fact is in a good accordance with Johnson's study^（9） for inorganic salt-effect onto an azeotropic binary system shown in Fig.7.