Tire valve nut and tire valve

A tire valve nut (10) for mounting a valve stem (20) to a wheel (30) in the valve hole (31) of the wheel (30). The valve stem (20) is used to charge air into a tire mounted on the wheel. The tire valve nut (10) includes a shoulder (12) formed along an inner wall of the tire valve nut(10) at a lower end of the tire valve nut (10). An elastic body (13) is arranged in the shoulder (12).