The invention discloses a tire burst safety emergency device. The tire burst safety emergency device aims to overcome the prior technical problem that a wheel hub and a road surface are in direct contact to lead the vehicle out of control when a vehicle is in a tire burst accident. The tire burst safety emergency device can contact the road surface through providing a protective structure as a medium, and can alleviate the dislocation of a wheel and a wheel hub when the tire bursts to a certain extent, so as to avoid that the wheel hub and the road surface are in direct contact to lead the vehicle out of control when the tire bursts. The circumferential side face side wall of the wheel hub of the device is located in the inner part of the tire. The tire burst safety emergency device comprises a safety protection pad. The safety protection pad structure is in a circular ring shape. The inner side structure of the safety protection pad matches with the circumferential side face side wallstructure of the wheel hub. The safety protection pad covers the entire circumferential side face side wall of the wheel hub.