A device for lifting and tightening screws includes a transporting unit to move the device to a screw suction position or a screw locking position, a suction nozzle unit, a vacuum generator, and an electronic screwdriver unit. When the device is moved to a position to attract and apply suction to a screw, the suction nozzle unit captures a screw. When the device is moved to the screw locking position, the electronic screwdriver unit tightens the screw. The device prevents the suction nozzle from contacting the workpiece, guides a suction position of the screw, and can function in relation to screw holes surrounded by steps and barriers.