The invention discloses an adhesive polystyrene granule heat preservation plate automatic production apparatus and method. The apparatus comprises a control device as well as a liner plate laying device, a material preparation device, a plate conveying belt, a leveling device, a cutting device and a finished product plate storage device; the liner plate laying device is arranged at the inlet of the plate conveying belt; the material preparation device is arranged above the front end of the plate conveying belt; the material paving device is arranged above the plate conveying belt and is located behind the material preparation device; the cutting device is arranged above the rear end of the plate conveying belt; and the finished product plate storage device is arranged at the exit of the plate conveying belt. According to the apparatus and method of the invention, the control device controls various kinds of devices, so that each link can perform automatic production according to technical control so as to work stably and orderly, so that a set of full-automatic adhesive polystyrene granule heat preservation plate production line can be formed; the production efficiency of adhesive polystyrene granule heat preservation plates can be improved; plate cutting precision is high; the rate of finished products of the plates is high; and production scraps will not be generated.