The invention relates to a safety device for protecting automobile drivers, comprising a front bumper, an automobile body and a protector. The protector comprises a sensor, a switch, a power supply, wires, an electromagnetic tractor, seats, a slide and wheels; the sensor and the switch are disposed at the rear of the front bumper; the sensor controls the switch; the switch, the power supply and the electromagnetic switch are serially connected through the wires; the slide and the electromagnetic tractor are both fix on a chassis of the automobile body; the slide is located in the front of the electromagnetic tractor; the seat moves on the slide; the bottom of each foot of each seat is provided with one wheel; a traction arm of the electromagnetic tractor hooks to the rear of the certain seat. At the moment of automobile crash, the sensor is triggered to switch on the circuit through the switch, the electromagnetic tractor runs, the traction arm of the electromagnetic tractor pulls the seat back quickly by a certain distance; injury of the driver caused by the crash is reduced as far as possible. The safety device can be used with an automobile airbag system to allow double safety.