Provided are a washing machine tub and a washing machine. The washing machine tub includes a front plate and a tub body formed by two side plates and a rear plate. The tub body is formed integrally. The tub body and the front plate are respectively provided with a main body flange and a front plate flange at binding ends. A protruding rib and a groove are cooperatively provided at the main body flange and the front plate flange respectively, along a length direction thereof to prevent deformation of the tub.