Box drying equipment for drying lithium batteries. It uses a vacuum pump to pump air and moisture, so that a vacuum state is formed in the working room, reducing the boiling point of water and speeding up the drying speed. In the specific space of the tunnel chamber, the vacuum system is used to discharge the water, gas, impurities and other substances in the tunnel chamber to achieve the vacuum state. At the same time, the internal filling of inert gas, especially some complex components of the articles can also be quickly dried, the use of intelligent digital temperature regulator for temperature setting, display and control