A brake fluid pressure controlling device is provided that controls a brake actuator to adjust brake fluid pressure in a wheel cylinder provided to correspond to a wheel. The brake actuator includes a passage for supplying the brake fluid to the wheel cylinder, a pump that discharges the brake fluid to the passage, and an electromagnetic valve that is located in the passage and adjusts the pressure of the brake fluid flowing into the wheel cylinder. The device includes a discharge rate detecting section, a signal generating section, a noise generating section, a noise overlaying section, and an electromagnetic valve controlling section. The discharge rate detecting section detects the discharge rate of the brake fluid discharged by the pump. The signal generating section generates a command signal for controlling the electromagnetic valve. The noise generating section generates noise, the noise being an AC signal corresponding to the detected discharge rate. The noise overlaying section overlays the noise onto the command signal, thereby generating an overlaid command signal. The electromagnetic valve controlling section controls the electromagnetic valve according to the overlaid command signal.