The invention minutes to relate to the automatic jeonghwasik vacuum degassing apparatus to be automatically cleaned by the compressed air at the same time to minimize the packing volume by degassing the air each time the surface of the roller 1 rotates contained in the body, supplying the powder to the upper the hopper is mounted to the lower body it has a discharge port formed for discharging the degassed powder; It is provided on the inner side of the body, in order to pass through the positive pressure provided by the compression pump of the negative pressure and outside provided with an external vacuum pump, each of the plurality of vent holes in its outer peripheral surface is formed with a predetermined distance, of the vacuum pump pressure and the vacuum roller is provided with a plurality of partition walls to a predetermined portion of an inner space divided into compartments for each of the intake and discharge of the positive pressure compression pump; Has dispensing means for applying a negative pressure is a positive pressure in the compression pump to at least one compartment of the vacuum roller, and the other compartment; Filtering means for preventing is provided on the outer peripheral surface of the vacuum roller which powder is sucked into the inner side of his; The vacuum is provided on the roller side, the pressure roller for pressing the powder toward the vacuum roller; And it provides automatically jeonghwasik vacuum degassing apparatus comprising a power providing means for providing the rotational power to the vacuum roller and the pressure roller.