The utility model discloses a tobacco rib moisture detector functional type bulk curing barn automatic control device. The automatic control device is characterized in that a tobacco rib moisture detection module is connected with a central processor, which is respectively connected with a liquid crystal display module and a humiture acquisition control module; the humiture acquisition control module is respectively connected with a wet and dry bulb sensor, a combustion-supporting door motor, and a dehumidification door motor; a power supply module is respectively connected with the central processor and the humiture acquisition control module; and the tobacco rib moisture detection module is provided with six groups of tobacco rib moisture detection probes. By comparing with the prior art, the automatic control device is advantageous in that the costs are low, the operation is simple, the tobacco rib moisture detection precision is high, the tobacco baking can be effectively facilitated, and the improvement of the tobacco baking level can be facilitated.