The present disclosure relates to an inner tub of a washing machine. The inner tub comprises a tub body (1), a balancing ring (2) mounted at the upper part of the tub body (1) and a tub bottom (3) mounted at the lower part of the tub body (1), wherein an annular necking structure (4), of which the inside diameter is smaller than that of the tub body (1), is arranged on the tub body (1) and positioned below the balancing ring (2), a plurality of dewatering holes (5) are distributed at the necking structure (4) and/or between the necking structure (4) and the balancing ring (2), and the middle-lower part of the tub body (1) is of a sealed water containing structure. A disconnected type filtering cover (6) is arranged on the internal wall of the tub body (1) and positioned below the necking structure (4) and comprises a main body (61) and an auxiliary block (62), the auxiliary block (62) is arranged above the main body (61) and below the necking structure (4) and is located at the upper part of the inner tub, an
