High-precision electric control valve with protection function

The utility model relates to a high-precision electric control valve with a protection function, which comprises a valve body, a valve core, a valve rod, a shaft seal and an electric actuating mechanism, the top end of the valve rod is mounted on the electric actuating mechanism, a mounting through hole is arranged at the bottom of the valve body, and the bottom of the valve body is connected with a mounting seat through a bolt. A mounting groove is formed in the position, corresponding to the mounting through hole, in the mounting base, a diaphragm is fixed to a notch of the mounting groove, a first spring is arranged on the lower end face of the diaphragm, the bottom of the first spring is fixed in the mounting groove, an electronic pressure gauge is arranged at the bottom of the mounting base, and the detection end of the electronic pressure gauge is located at the bottom in the mounting groove. A pressure relief hole is further formed in the mounting base, the top of the pressure relief hole communicates