Vibration and noise reduction expansion valve

The invention discloses a vibration and noise reduction expansion valve. The vibration and noise reduction expansion valve comprises a valve body, a membrane and an ejector rod, wherein the membrane is arranged in the valve body, the membrane can change according to the temperature and pressure change of refrigerant of an evaporator, and the ejector rod transmits the change. The valve body is provided with a longitudinal hole penetrating a channel. The longitudinal hole is provided with a vibration reduction clamping piece used for clamping the ejector rod, and the vibration reduction clamping piece is transversely limited in the longitudinal hole. To stabilize the radial movement of the ejector rod, the vibration reduction clamping piece transversely limited is arranged in the longitudinal hole of the valve body and comprises an annular supporting ring and at least three evenly-distributed elastic clamps integrated with the annular supporting ring, wherein the vibration and noise reduction functions of the v