The present invention provides a vehicle brake hydraulic pressure control apparatus. On a split road of an antilock braking control state, the pressure difference between the brake hydraulic pressures of the left and right wheel brakes is controlled in such a way that even though differences exist between the left and right wheels and the ground friction forces, the road is not determined mistakenly as the split road. A wheel deceleration calculating sections (25A, 25B, 25C, 25D) individually calculate, as negative values, wheel decelerations of front and rear wheels. If, at a time when the antilock braking control for at least one of the right and left front wheels is started or at a time when the antilock braking control for at least one of the right and left rear wheels is started, (i) a maximum value of the wheel decelerations calculated by the wheel deceleration calculating sections is equal to or larger than a first predetermined value and (ii) a difference between the wheel decelerations of the right and left front wheels or the right and left rear wheels which are in an antilock braking control state is equal to or larger than a second predetermined value, a split road determining section determines that road surfaces constitute a split road.