The invention provides a surface damage detection device. The surface damage detection device is used for a substrate to be detected, and comprises: an induction layer arranged on the substrate to bedetected; a sensor component connected with the induction layer and used for collecting detection signals of the induction layer; and the processor used for determining the damage state of the substrate to be detected according to the detection signal of the induction layer. According to the surface damage detection device, the damage state of the substrate to be detected can be determined throughthe detected damage state of the induction layer, real-time detection of the substrate to be detected is achieved, it is avoided that manual detection is needed every time the surface of the substrate to be detected is detected, manpower is saved, and the detection accuracy can be guaranteed.