An electromagnetic valve has a fixed core, a movable core, a coil attract the fixed core and the movable core each other, a valve body and a valve seat member including a funnel-shaped valve seat surface and an inlet path. The flow path is closable by retreat/advance of the valve body relative to the valve seat surface. The valve body includes a semi-spherical seal portion and a stem portion extending from the seal portion towards the movable core, a diameter of an end portion of the seal portion at the stem portion side is larger than a diameter of an end portion of the stem portion at the seal portion side. A space is defined in an area located on an extended line extending from a small diameter end portion to a large diameter end portion of the valve seat surface.