The invention discloses a compression roller type washing machine which can increase washing efficiency by squeezing clothes through a compression roller. An outer cylinder is arranged in a case body transversely, a rotary drum is arranged in the outer cylinder and connected with a center shaft hole of the outer cylinder through a hollow shaft, a front shaft end of a driving shaft is connected with an auxiliary motor through a worm and a gear, and a rear shaft end of the driving shaft penetrates through the hollow shaft of the rotary drum to be connected with an eccentric mechanism. When clothes are washed, the compression roller in the rotary drum is positioned at the left eccentric position under the action of the eccentric mechanism. When a main motor drives the rotary drum to rotate clockwise, the compression roller can perform squeezing type washing on clothes rotating along with the rotary drum; when rotating anticlockwise, the rotary drum performs beating type washing on clothes. When clothes are spin-dried, the auxiliary motor drives the compression roller through the eccentric mechanism, clothes in the rotary drum can be spin-dried in an eccentric mode through the rotary drum when the compression roller moves to the axis of the rotary drum.