Washing and drying all-in-one machine

The utility model relates to a washing and drying all-in-one machine which comprises a box body. The outer cylinder is arranged in the box body; the inner cylinder is arranged in the outer cylinder; a clothes care cavity is formed in the inner cylinder; an air inlet and an air return opening are formed in two ends of the clothes care cavity; the drying air duct is arranged outside the outer cylinder; one end of the drying air duct is connected with the air inlet, and the other end is connected with the air return port; the fan is arranged in the drying air duct and is used for providing wind power; the spraying device comprises a first spraying head and a second spraying head; the first spraying head extends into the drying air duct, and the first spraying head faces the fan; the second spraying head extends into the air return opening and faces the inner surface of the outer barrel and/or the inner surface of the inner barrel. According to the washing and drying all-in-one machine, water can be sprayed to th