The invention discloses a washing and drying integrated machine with a rolling drum. The machine includes a water containing barrel, the rolling drum and a cooling water supply device. The cooling water supply device supplies cooling water to the bottom wall surface of the water containing barrel through a cooling water inlet passage in order to form a condensing surface on the bottom wall surfaceof the water containing barrel, an outlet end of the cooling water inlet passage is formed in the upper portion of the bottom wall surface of the water containing barrel, and a diversion component for diverting cooling water flowing inward is arranged at the outlet end of the cooling water inlet passage; the outlet end is divided by the diversion component into two diversion outlets, and the cooling water is diverted by the diversion component and flows to the bottom wall surface of the water containing barrel through the diversion outlets. The washing and drying integrated machine is concisein structure, capable of preventing splashing of water and saving space and stable in condensation water path.