The invention relates to a cheese liquid-ammonia dyeing device. The cheese liquid-ammonia dyeing device comprises a refrigerating unit, a dye preparing unit, a dyeing unit, a drying unit, a recycling unit, a ventilation unit and a conveying unit. The conveying unit is a connecting pipe and is connected with the refrigerating unit in a matched mode to complete conveying of liquid ammonia, dye and ammonia gas. A mechanical-arm dyed-piece placing unit and a control unit are adopted. The control unit is respectively connected with the refrigerating unit, the dye preparing unit, the dyeing unit, a mechanical-arm dyed-piece placing unit, the ventilation unit, the drying unit and the recycling unit in a matched mode. The mechanical-arm dyed-piece placing unit is matched with the refrigerating unit, the dyeing unit and the drying unit to achieve the aim that cheese is conveyed into the dyeing unit, conveyed into the drying unit and conveyed out of the drying unit. The refrigerating unit is composed of a refrigerating compressor and a freezing storeroom, the ventilation unit, the control unit and the freezing storeroom are installed together, the dye preparing unit, the dyeing unit and the recycling unit are arranged in the freezing storeroom, and the drying unit is arranged outside the freezing storeroom.