The invention discloses a direct-acting type electromagnetic regulating valve with a locating stud. The regulating valve comprises a valve port, wherein a valve plug and a spring are arranged at the valve plug; an electromagnetic regulating device is connected to the upper part of the valve plug, and comprises a coil; a magnetizer is arranged on the upper part in the core hole of the coil, and anarmature is arranged on the lower part in the core hole of the coil; and corresponding locating stud and locating pinhole are arranged between the magnetizer and the armature. By matching of the locating stud and the corresponding locating pinhole, when the armature moves up and down in the core hole of the coil, oscillation is avoided, and the controlling accuracy of the valve is improved.