Clamp-breaking prevention scarification tooth

The invention provides a clamp-breaking prevention scarification tooth which comprises a tooth disc and scarification tooth bodies. A through hole is formed in the center of the tooth disc. An inward-concave annular groove is formed in the ring face of the tooth disc. The number of the scarification tooth bodies is at least three. Each scarification tooth body comprises a tooth rod and a tooth top. The tooth rods are inserted and arranged in the annular groove in the radial direction of the tooth disc. A reset spring is arranged at the position, corresponding to each tooth rod, of the groove bottom of the annular groove. One end of each reset spring is fixedly connected to the groove bottom. An ejector block is arranged at the other end of each reset spring. Each ejector block is connected with the corresponding tooth rod. The clamp-breaking prevention scarification tooth is simple in structure and reasonable in design. During hard soil layer operation, switching of the scarification tooth can be achieved, the situation that the scarification tooth is broken off due to too large resistance is avoided, and the service life of a scarifier is prolonged.