Water tank type cleaning machine

The utility model relates to a water tank type cleaning machine which comprises a first water tank and a second water tank which are arranged side by side and connected with each other, a door body capable of opening or closing the top opening of the first water tank is arranged at the top opening of the first water tank, and the door body can be arranged at the top of the first water tank and the top of the second water tank in a reciprocating sliding mode. The door body and the first water tank are provided with a control structure which can restrain the door body at the top of the first water tank or jack the door body upwards relative to the first water tank to expose a gap for discharging steam in the washing cavity in a door closing state. The door body capable of sliding back and forth between the first water tank and the second water tank is arranged, so that opening and closing are convenient; a control structure capable of locking the door body and the first water tank or lifting the door body by a