The invention relates to a multifunctional scalpel, which belongs to the field of medical equipment, and includes a scalpel handle, which is provided with an anti-skid layer, and the scalpel handle is connected to a surgical blade through a mounting hole, and one side of the scalpel handle is A cone-shaped lampshade is provided, and an LED light is arranged inside the cone-shaped lampshade. A power supply and a sliding bar are provided in the inner cavity of the scalpel handle, and sliding teeth are provided on the sliding bar, and the sliding teeth are connected to pulleys. Gears are provided on the pulley, and a blood-sucking port is provided at the bottom of the scalpel handle, and the blood-sucking port is connected to a blood-sucking vessel. There is also an LED light switch and an electric motor switch on the handle of the scalpel. The structure of the invention is simple. By setting the slide bar, the blade can be stretched arbitrarily, and a suction blood vessel is set, so that the bleeding of the wound can be sucked in time during the operation. , to prevent interference with the doctor's field of vision, reduce surgical complications, and also set up LED lights to reduce blind spots during surgery.