High-precision adjusting valve with needle type valve element

A high-precision adjusting valve with a needle type valve element comprises a valve cover, the valve element and a valve body, wherein the valve body comprises a valve cavity, a valve base is arranged in the valve cavity and provided with a sleeve, the bottom of the sleeve is provided with an adjusting hole, at least one radial through hole is formed in the middle of the sleeve in the circumferential direction, and any radial through hole is communicated with the portion, in the upper side of the valve base, of the valve cavity; the valve element is arranged in the sleeve and comprises the needle type lower end coaxial with the adjusting hole, a seal plate is arranged in the middle of the valve element, the seal plate and the inner wall of the sleeve are sealed, and the upper end of the valve element penetrates through the valve cover. An actuator drives the valve element to move upwards, a gap is generated between the needle type lower end and the adjusting hole, fluid enters the portion, in the upper side o