The clothes dryer comprises a box body, a treatment barrel arranged in box body, a hot air supply channel for supplying heated air to the treatment barrel comprises an air outlet channel connected with the treatment barrel; the air outlet channel is close to the front panel of the box body; a water supply pipeline forms a part of the condensing device, comprises a water inlet valve arranged closeto the rear panel of the box body, extends from the water inlet valve to the front panel of the box body, and comprises a section arranged between the air outlet channel and the front panel, and the water supply pipeline comprises a pipe wall made of a heat conduction material. When water in the water supply pipeline flows through a section arranged between the air outlet channel and the front panel, heat exchange can occur between the water and heat from the air outlet channel, part of the heat is continuously taken away, and therefore the situation that the temperature of the front panel iscontinuously increased due to the fact that a large amount of heat is accumulated between the air outlet channel and the front panel is avoided.