The utility model discloses a prevent tire pressure sensor that inflating valve pitched, including casing, inflating valve, dustproof cap, fixation clamp, recess and spring, the fixed mounting board sets up the one end at the casing, and the bottom fixed mounting of casing has the fixed plate, and the fixed plate passes through the screw movably connected inflating valve, and the bottom symmetry of fixed plate is equipped with the spout, equal fixed connection springs in two spouts, and the fixation clamp is all connected to the one end of two springs, and the one end of fixation clamp is equipped with the recess in the bilateral symmetry of inflating valve, the utility model has the advantages of simple structure, low in cost, and the practicality is strong through being equipped with fixation clamp and recess, is favorable to the position of fixed inflating valve, strengthens the wireless connection of inflating valve and tire pressure sensor, can effectually prevent to lead to the screw on the tire pressure sensor loose because of road surface unevenness among the vapour vehicle driving process, phenomenon that the inflating valve pitched to the malfunctioning phenomenon of tire pressure sensor can be effectually avoided, life is improved, convenient to use.