To provide a hydraulic control device which can continuously control the hydraulic pressure of a working fluid discharged from a pump.SOLUTION: A solenoid valve 5 of a hydraulic control device comprises: a valve body 14 having a slide passage 20, an introduction port 21 and a derivation port 22; a spool valve 15 which is slidably arranged in the slide passage 20; and a coil spring 18 for energizing the spool valve 15 to the other direction of the valve body 14 in an axial line direction. The solenoid valve 5 comprises an electromagnetic actuator 19 which is controlled by a duty ratio, and energizes the spool valve 15 to one direction of the valve body 14 in the axial line direction. The spool valve 15 is energized to one direction of the valve body 14 in the axial line direction by a resultant force of the hydraulic pressure of a working fluid supplied from the introduction port 21 and an energization force of the electromagnetic actuator 19. Then, the introduction port 21 and the derivation port 22 communicate with each other via an annular groove 28 of the spool valve 15 accompanied by the movement of the spool valve 15, and discharge pressure from a pump 6 is continuously controlled.SELECTED DRAWING: Figure 2
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