The invention discloses a batch extractive distillation separation method of isopropyl ether-isopropanol mixture, and relates to a batch extractive distillation method of isopropyl ether. In the method, an extractive distillation tower, a heating kettle at the bottom of the extractive distillation tower, a condensing unit connected to the top of the extractive distillation tower and a distillation device composed of a receiving tank are adopted. The technological process of the method is as follows: adding raw materials at normal pressure in one step; and continuously adding ethylene glycol monomethyl ether serving as an extraction agent, performing batch operation of the extractive distillation tower, controlling the temperature of the top of the tower and a reflux ratio, and sequentially extracting isopropyl ether and isopropanol. The batch extractive distillation separation method has the advantages that by taking ethylene glycol monomethyl ether as an extraction agent, relative volatility of an isopropyl ether-isopropanol is improved, the problem of poor solubility when ethanediol is taken as the extraction agent, the operation is convenient and easy to control, the cyclic utilization of a solvent is realized, the energy consumption is reduced, the cost is reduced and the separation effect is good, so that the method has good economy and is favorable for environmental friendliness.