The invention provides a linear solenoid valve (10) comprising: (a) a housing (20) having a tube-shaped body section (34), a core section (32) which closes the opening of one end of the body section, and a partition section (30) which separates a first liquid chamber (46) on the core section side and a second liquid chamber (48); (b) a plunger (22) which, with one end thereof facing the core section, disposed within the first liquid chamber so as to be movable in the axial direction, the other end of the plunger (22) being able to be seated over an opening (52) of a communication hole (50); (c) an elastic body (106) for pressing the plunger in a first direction which is the direction in which the plunger is separated from the core section; and (d) a coil (24) for forming a magnetic field for moving the plunger in the direction in which the plunger approaches the core section. A recess (78) is formed in a portion of the inner peripheral section of the body section, the portion intersecting the end surface of the core section which is located on the first direction side. The configuration reduces self-exciting vibration by preventing bubbles within the first liquid chamber from affecting the damping effect of the plunger.