Drying box and packaging box

The utility model belongs to the technical field of drying, and particularly relates to a drying box and a packaging box, the drying box comprises a box body, a box cover, a drain valve and an allochroic silicagel desiccant, the box body is of a transparent structure and is provided with an open containing cavity and a flow guide pipeline communicated with the containing cavity; the box cover is installed at the opening of the box body in a sealed connection mode and comprises a water vapor one-way permeable membrane, and the box cover is suitable for only allowing water vapor to enter the containing cavity from the outside through the water vapor one-way permeable membrane at the opening position of the box body; the drainage valve is arranged at the bottom of the containing cavity and is suitable for opening and closing the flow guide pipeline; the allochroic silicagel desiccant is arranged in the containing cavity and located above the drainage valve. Through the structural arrangement, the service life of