A drum type washing-drying machine comprising a water tub (3) elastically mounted in a washing machine body (1), a drum (4) rotatably mounted in the water tub (3), an air supply opening (20) and an air discharge opening (21) both provided in the water tub (3), a circulation path (10) having both ends connected to the air supply opening (20) and the air discharge opening (21) respectively, a heat pump mechanism (12) including a condenser (14) and an evaporator (15) both disposed in the circulation path (10), and a blower fan (11) disposed in the circulation path (10) to circulate air between the circulation path (10) and the water tub (3), characterized by a plurality of branch paths (22a, 22b;
- 23a, 23b;
- 24a, 24b;
- 25a, 25b;
- 26a, 26b;
- 27a, 27b;
- 28a, 28b) provided between a part of the circulation path (10) where the condenser (14) is located and the air supply opening (20) and/or another part of the circulation path (10) where the evaporator (15) is located and the air discharge opening (21).