The invention discloses a pulsator washing machine which comprises a body, an outer drum, an inner drum and a drainage mechanism, wherein the outer drum is arranged in the body; the inner drum is rotationally arranged in the outer drum; the outer wall surface of the inner drum is closed; a water outlet communicated with the inner drum is formed in the bottom of the inner drum; the drainage mechanism is arranged at the bottom of the inner drum and configured to block off the water outlet when the inner drum is static; and the water outlet is opened when the inner drum rotates. According to the pulsator washing machine disclosed by the embodiment of the invention, due to the closing of the outer wall surface of the inner drum, conduction of water flow in washing and dewatering processes is controlled by utilizing the drainage mechanism at the bottom of the inner drum, so that the water consumption in the process of cleaning the clothes by the pulsator washing machine can be reduced, the problem that dirt accumulation is caused due to long-term water accumulation between the inner drum and outer drum of the pulsator washing machine in the process of cleaning the clothes can be solved, and a washing ratio of the pulsator washing machine is improved. Moreover, the pulsator washing machine is simple in structure, convenient to assemble and disassemble, simple to operate, low in production cost and high in operational reliability.