According to a solenoid valve of the invention, which is fitted in a pump housing, when ABS/TCS/ESP operate, a valve body with a plunger that forms the internal channel with a plunger seat is formed in a simple cylindrical shape to reduce a cycle time and manufacturing cost while a seat housing that is manufactured by pressing, in which a filter and plunger seat forming an internal channel are assembled is fitted in a vale body by staking. Accordingly, a laser welding is not needed and the length of the end portion of valve body is reduced, such that the entire length is reduced and the weigh is reduced as well.