A combined braking system in which communicative connection a master cylinder and a brake caliper is cut off by an electromagnetic on-off valve, and hydraulic pressure, corresponding to driving conditions and a braking operation, is generated by an electrically-operated actuator of a hydraulic pressure modulator. Hydraulic pressure of the hydraulic pressure modulator operates on the brake caliper, whereas a psuedo-reaction force which has been generated by a reaction force modulator operates on the master cylinder. The reaction force modulator is configured to include: a fluid chamber for receiving hydraulic fluid which has flowed therein from the master cylinder; a piston to constitute a wall of the fluid chamber; and a metal-made coil spring and a deformed plastic resin spring, both of which apply a force to the piston. The braking system provides a braking operation having a smooth feeling which is similar to that given by a direct-operation-type brake system.