The invention discloses an air blowing clamp for a numerical control machine tool. The air blowing clamp comprises a pedestal and total three groups of processing workstations, wherein each processing workstation comprises a fixed baffle plate, a supporting seat and a moving groove; a clamping block connected by a screw rod is arranged between each of the fixed baffle plates and the corresponding supporting seat; one end of each of the screw rods penetrates through the supporting seat, and is installed in a moving seat; moreover, the end, stretching out of the moving seat, of each of the screw rods is connected with a first gear; the first gears are respectively engaged with second gears arranged on motors on the pedestal; moreover, the screw rods are driven to rotate through the rotation of the motors; the moving seats are respectively installed in the moving grooves, and can move in the moving grooves; the total three groups of processing workstations are arranged on the pedestal in parallel; an air blowing device is arranged between every two adjacent groups of processing workstations; the outer sides of the processing workstations on the pedestal are also respectively provided with a tightly-pushing structure. By applying the clamp, the stability of a product in processing is improved greatly, the precision of processing is guaranteed, the quality of the product is improved, and the defective rate is lowered.