The invention discloses an inner barrel of a washing machine. The inner barrel comprises a barrel mouth, a barrel body and a barrel bottom, wherein a first rotary riveting edge is arranged between thebarrel mouth and the barrel body; a second rotary riveting edge is arranged between the barrel body and the barrel bottom; a plurality of layers of overlapping edges which are mutually engaged are respectively arranged in the first rotary riveting edge and the second rotary riveting edge; and a plurality of pressing points are respectively arranged on the overlapping edges of the first rotary riveting edge and/or the second rotary riveting edge. On the premise of not damaging the original edge overlapping structure, not generating interference, not influencing the appearance of parts, not generating abnormal noise and noise of the whole machine, a pressing point strengthening structure is added on the riveting edges connected with the barrel mouth, the barrel body and the barrel bottom, so that the connection strength of the riveting edges is enhanced. The strength requirement of the inner barrel at the ultra-high rotating speed of 1600 r/min is met.