The utility model discloses a multifunctional screw driver, comprising a handle and a working beam, wherein the working beam is arranged at the front end of the handle which is hollow; a battery is arranged in the handle; a light-emitting diode (LED) lamp is arranged in the front end face of the handle; an LED lamp switch is arranged in the back end face of the handle; and the LED lamp, the LED lamp switch and a power supply are connected by a wire. Compared with the prior art, the multifunctional screw driver is integrated with the LED lamp, and the screw driver also can be operated by one hand in a dark environment, so that the working efficiency is greatly improved, and lighting equipment also can be saved.