Hand electric drill is a typical electric hand tool. In many occasions, the operator needs to hold the electric drill for a long time. The coordination between man-machine relations should be fully considered. The force of the drill bit and the force of the hand are not on the same axis., Will generate torque, which causes the drill to break easily when the force is applied. Therefore, the grip of the hand electric drill is changed so that the operator will not break the drill if the force is applied when using it.