Refrigerating box capable of preventing frost hanging

The invention discloses an anti-frost refrigerator. The anti-frost refrigerator comprises a refrigerator body and a back box. The refrigeration box has the beneficial effects that the two drying boxes working alternately are adopted, during refrigeration, a fan pumps air in the refrigeration box into the air inlet pipe, then the air enters one of the drying boxes, and after being dried by activated carbon, the air enters the air return pipe along one of the first flow dividing pipes and flows back into the refrigeration box body, so that air dehumidification is completed; when the humidity exceeds a set value, the first electromagnetic valve and the second electromagnetic valve corresponding to the drying box are closed, the third electromagnetic valve corresponding to the drying box is opened, the first electromagnetic valve and the second electromagnetic valve corresponding to the adjacent drying box are opened, the third electromagnetic valve corresponding to the adjacent drying box is closed, and the adja