Tire pressure monitoring inflating valve capable of preventing sensor from falling off

The utility model discloses a tire pressure monitoring inflating valve capable of preventing a sensor from falling off, which belongs to the technical field of inflating and deflating equipment and comprises a valve body, the valve body is provided with a first end face and a second end face, a positioning groove is arranged on the valve body close to the second end face, and the valve body is provided with a mounting groove for communicating the second end face with the positioning groove. The side face, close to the second end face, of the positioning groove comprises a slope face and a positioning face. The slope surface is obliquely arranged in the circumferential direction; the positioning surface is parallel to the second end surface; the sensor is provided with a positioning concave cavity, and a positioning convex block is arranged in the positioning concave cavity; when the sensor is fixed to the nozzle body, the second end face abuts against the inner wall face of the positioning cavity, and the pos