Abstract: A solenoid valve is provided which can be reduced in size while allowing a plunger and a shaft to slide smoothly. A solenoid valve includes a solenoid portion with a plunger that moves in an axial direction using a magnetic force generated by a solenoid coil. The solenoid portion has a cover member that houses the plunger, a shaft that is movable in the axial direction along with the plunger, and a core member that attracts the plunger in the axial direction. The shaft is supported by a first bearing portion formed on a cylindrical portion of the core member and a second bearing portion formed on a second bottom portion of the cover member such that the shaft is movable in the axial direction.