The utility model relates to a notebook bottom school shape technical field especially relates to a bottom school clamp utensil, include: the holding down plate, and with the top board that lower pressing plate closed, the top board includes: the top board mainboard sets up the first block portion at four end angles of top board mainboard sets up engagement hole in the top board main part, and setup on the top board mainboard, be array arrangement's first air vent, the holding down plate includes: the holding down plate mainboard sets up four holding down plate mainboards end angles, and oneby one with the second block portion of first block portion block sets up on the holding down plate mainboard, with the protruding piece of engagement hole block, and the setting is in on the holdingdown plate mainboard, be array arrangement's second air vent, the utility model provides high production efficiency, production quality's stability and reduce characteristics such as the required furnace temperature temperature of release of stress.