The utility model relates to a washing machine capable of conveniently separating particles with different particle sizes in liquor. The washing machine is characterized by mainly comprising a kettle, a discharge valve, a filter bag component and a stirring device, a filtering isolation layer is arranged in a cavity of the kettle, the kettle is divided into a washing cavity and a small particle collecting cavity by the filtering isolation layer, the discharge valve is arranged at the lower end of the kettle, the filter bag component is arranged in the washing cavity and comprises a filter bag with an upward opening and a supporting frame for opening the filter bag, and a stirrer of the stirring device is mounted in the filter bag of the washing bag. By the aid of the filtering isolation layer and the small particle collecting cavity, when the particles are washed, small particles with diameters smaller than the bore diameter of the filtering isolation layer can penetrate filter holes and are deposited into the small particle collecting cavity. Sediments do not easily rise again or cover the surfaces of large particles. Therefore, the condition that particulate matters with different particle sizes are incompletely separated by a traditional method can be avoided, washing and separating effects are greatly improved, and products can be conveniently taken out.