To provide a solenoid valve 1A and a method of installing the solenoid valve 1A manufactured at a low cost and easily and reliably mounted by combining present components without increasing the number of parts and machining/assembling man-hours.

A core stator 35 having a flange part 40 and comprising a screw at a cylindrical boss part 42 is screwed to a screw part of a cylinder rear end of a valve body 4A without axial corotation by clamping a partially-bottomed cylindrical yoke 6A. To generate driving thrust, a plunger shaft 29, a seat plate 36 and a plunger 31 are fitted to the inner peripheral side of the core stator 35, and an electromagnetic coil 33 with a connector 50 is fitted to the outer peripheral side of the core stator 35, respectively into predetermined positions (directions). A ring core 8 is fitted to the outer peripheral rear end of the core stator 35 from behind to avoid interference in mounting, and a plate end 7A is fitted into the rear end of the yoke 6A and axially fitted by caulking.