A hydraulic pressure control unit that is used for a straddle-type vehicle brake system having a hydraulic circuit that at least includes: a primary channel through which brake fluid in a master cylinder is delivered to a wheel cylinder; a secondary channel which is provided with a pump and through which the brake fluid in the wheel cylinder is released to a primary channel intermediate portion as an intermediate portion of the primary channel by driving said pump; and a supply channel that supplies the brake fluid to a secondary channel intermediate portion as a region on a suction side of the pump in the secondary channel, and controls a hydraulic pressure of the brake fluid in the wheel cylinder, the hydraulic pressure control unit comprising: a base body that is formed with an internal channel constituting a part of the hydraulic circuit; a first valve that is attached to a first valve hole and controls a flow rate in a region on the wheel cylinder side of the primary channel intermediate portion in the primary channel of the hydraulic circuit, the first valve hole extending from a first valve opening that is formed on an outer surface of the base body to the internal channel; a second valve that is attached to a second valve hole and controls a flow rate in a region on an upstream side of the secondary channel intermediate portion in the secondary channel of the hydraulic circuit, the second valve hole extending from a second valve opening that is formed on the outer surface of the base body to the internal channel; a third valve that is attached to a third valve hole and controls a flow rate in a region on the master cylinder side of the primary channel intermediate portion in the primary channel of the hydraulic circuit, the third valve hole extending from a third valve opening that is formed on the outer surface of the base body to the internal channel; a fourth valve that is attached to a fourth valve hole and controls a flow rate in the supply channel of the hydraulic circuit, the fourth valve hole extending from a fourth valve opening that is formed on the outer surface of the base body to the internal channel; and a motor that is a drive source of the pump in the hydraulic circuit and is vertically arranged to the base body, the first valve opening and the second valve opening overlapping a first straight line in a state where a surface, to which the motor is vertically arranged, of the base body is seen from the front, and the third valve opening and the fourth valve opening overlapping a second straight line in the state where the surface of the base body is seen from the front, characterized in that in the state where the surface of the base body is seen from the front, the first straight line passes an outer side of the motor, and the second straight line passes the outer side of the motor and crosses the first straight line at a right angle. a base body that is formed with an internal channel constituting a part of the hydraulic circuit; a first valve that is attached to a first valve hole and controls a flow rate in a region on the wheel cylinder side of the primary channel intermediate portion in the primary channel of the hydraulic circuit, the first valve hole extending from a first valve opening that is formed on an outer surface of the base body to the internal channel; a second valve that is attached to a second valve hole and controls a flow rate in a region on an upstream side of the secondary channel intermediate portion in the secondary channel of the hydraulic circuit, the second valve hole extending from a second valve opening that is formed on the outer surface of the base body to the internal channel; a third valve that is attached to a third valve hole and controls a flow rate in a region on the master cylinder side of the primary channel intermediate portion in the primary channel of the hydraulic circuit, the third valve hole extending from a third valve opening that is formed on the outer surface of the base body to the internal channel; a fourth valve that is attached to a fourth valve hole and controls a flow rate in the supply channel of the hydraulic circuit, the fourth valve hole extending from a fourth valve opening that is formed on the outer surface of the base body to the internal channel; and a motor that is a drive source of the pump in the hydraulic circuit and is vertically arranged to the base body, the first valve opening and the second valve opening overlapping a first straight line in a state where a surface, to which the motor is vertically arranged, of the base body is seen from the front, and the third valve opening and the fourth valve opening overlapping a second straight line in the state where the surface of the base body is seen from the front,