A centrifugal drainage mechanism (5) and a laundry lifting device for a washing machine, and a washing machine are disclosed. The centrifugal drainage mechanism (5) comprises: a centrifugal component (51), being configured of moving under a centrifugal force; a valve plug component (52), used for sealing a water drainage hole of a washing machine in a normal condition; and a lever (53), wherein the middle of the lever structure is rotatably supported and fixed, one end of the lever structure is connected and fixed to the centrifugal component (51), and the other end of the lever structure abuts against the valve plug component (52) and is in contact fit with the valve plug component (52). The centrifugal component (51) drives an end, matched the valve plug component (52), of the lever (53) to rotate to a direction away from the valve plug component (52) under the centrifugal force, and then the valve plug component (52) moves to open the drainage hole. The lever (53) of the centrifugal drainage mechanism (5) is only in contact with the valve plug component (52), thereby effectively solving the problems whereby the valve plug component (52) is subjected to a cornering force of a tensile force of a lever (53) because an existing lever structure (53) is hinged and connected to a valve plug (52) by means of a shaft and a shaft hole, and thus, the position of the valve plug (52) does not preferably correspond to that of the water drainage hole, the valve plug (52) fails, and a sealing effect of an inner cylinder (1) is affected.