The utility model discloses a drum type washing machine, liquid distribution that is used for drum type washing machine and roller assembly, the liquid distribution includes: the box body, it has the appearance water cavity to inject in the box body, the box body have the outer installation face that is used for linking to each other with drum type washing machine's cylinder and with the interior trickle face of installing the facial features back of the body outward, be equipped with on the interior trickle face with at least one trickle hole of holding the water cavity intercommunication, at least one division board, at least one division board are established and fall into a plurality of water distribution cavity in order will hold the water cavity in being held the water cavity, and every water distribution cavity links to each other with at least one trickle hole. According to the embodiment of the utility model provides a liquid distribution can improve washing performance and efficiency, reduce cost.