The utility model relates to an intelligent humidification and moisture regain device for a tobacco leaf baking room. The intelligent humidification and moisture regain device comprises a heating furnace disposed in a bulk curing barn, an atomization nozzle is disposed beside the heating furnace, a high-pressure atomization pump and a solenoid valve are connected, the solenoid valve and a conveyer pipe are connected, the other end of the conveyer pipe extends into a heating chamber of the bulk curing barn to connect the atomization nozzle, a baking room humiture automatic control instrument is disposed at the external of the bulk curing barn, and is connected with the solenoid valve, and a wet and dry bulb sensor and a cycle blower fan disposed in the bulk curing barn. The intelligent humidification and moisture regain device, compared with the prior art, is characterized by reasonable design, simple structure, low cost, can accurately realize humidification and moisture regain for tobacco leaf backing, and is suitable for bulk curing barn groups.