HYDRAULIC PRESSURE CONTROL DEVICE AND STRADDLE-TYPE VEHICLE

To obtain a hydraulic pressure control device with which the degree of freedom of mounting on a straddle-type vehicle can be improved as compared with the related art. [0002] The hydraulic pressure control device according to the present invention is used in a brake system capable of executing anti-lock brake control and mounted to a handlebar of a straddle-type vehicle. The hydraulic pressure control device includes: a master cylinder-integrated base body where a reservoir tank for brake fluid storage connected to a master cylinder and an internal flow path through which a brake fluid flows are formed; and inlet and outlet valves provided in the base body and opening and closing the internal flow path. An inlet valve mounting hole storing the inlet valve and an outlet valve mounting hole storing the outlet valve are open on a second surface in a case where a surface of the base body where an opening portion of the reservoir tank is formed is a first surface and a surface of the base body opposite to the first surface is the second surface.