Abstract: The present disclosure relates to a continuous fermentation device that can ferment objects continuously fed thereinto while conveying the objects. The present disclosure provides a continuous fermentation device comprising a plurality of fermentation modules, each including: a conveyor belt, which transports objects that are continuously fed thereinto to be fermented from one side to the opposite side thereof; agitators, which is located on the conveyor belt; and an air diffuser, which is located on one side of the conveyor belt, in which the continuously fed objects to be fermented are fermented while being passed through the fermentation modules. According to the present disclosure, feeding of raw materials to be fermented, fermenting the raw materials, and discharging of the fermented materials are continuously performed so that it is possible to significantly reduce the processing time, thereby reducing the operation time of the production process.