Dehumidifier

The invention relates to a dehumidifier, and belongs to the technical field of air dehumidification, the dehumidifier comprises a shell, an air inlet and an air outlet, the shell is provided with a cavity, and the air inlet and the air outlet communicate with the cavity; the dehumidification device comprises a first air inlet and a second air outlet; the dehumidification device comprises an air guide shell communicating with the air inlet and the air outlet, a cooling fin arranged in the air guide shell, an evaporation piece arranged on the side, close to the air inlet, of the air guide shell and installed on the cooling fin, and a refrigeration piece clamped between the evaporation piece and the cooling fin. The fan is arranged on the side, away from the evaporation piece, of the air guide shell, the power panel is installed on one side of the air guide shell, a photocatalyst net is arranged in the air guide shell and located at the air outlet, a UV lamp panel for irradiating the photocatalyst net is further