The invention provides a sensor bracket assembly used for testing tire bursting pressure. The sensor bracket assembly comprises a bracket base and a plurality of brackets, wherein the bracket base is mounted on a test band and is adjacent to a tire test piece; the plurality of brackets are vertically mounted on the bracket base and are arrayed at intervals; a pressure sensor is mounted at the upper part of each bracket; the cross section of each bracket is in a wing-shaped section; the middle line of each wing-shaped section is set to accord with a flow line of a bursting airflow field. According to the sensor bracket assembly, the brackets with the wing-shaped sections can be used as the brackets for mounting air pressure sensors in a tire bursting flow field testing system; in an air jet flow process after a tire is burst, the influences on the test of the airflow field by a sensor bracket are reduced. The sensors mounted on the brackets can be used for recording and accurately collecting data of air pressure values of different positions in an air pressure field in real time after the tire is burst, and the interference is smaller. The sensor bracket assembly can be used for testing a jet flow pressure flow field of high-pressure air.