An electromechanical brake system, the electromechanical brake system comprising a) a caliper connected to the end of a mechanical transmission mechanism for clamping a brake disc, b) a capacitor-based power source and c) at least one electric brake device, the electric brake device comprising a motor that acquires electric power from the capacitor-based power source via a power supply main circuit to generate a braking force, wherein d) the electromechanical brake system further comprises an energy recycling circuit connected in parallel to the power supply main circuit, the energy recycling circuit comprises a unidirectional conduction element and/or a voltage regulating element (53, 54), e) when the brake force is reduced or the brake is at least partially released in response to a braking demand, the motor generates energy which is returned to the capacitor-based power source via the energy recycling circuit, f) the electromechanical brake system further comprises a protective switch assembly, the capacitor-based power source is electrically connected to the motor through the protective switch assembly and the protective switch assembly is configured to control forward conduction of the power supply main circuit and g) the electric brake device further comprises a control module, which is electrically connected to the motor and the protection switch assembly, and controls the protective switch assembly to cut off an electrical connection between the motor and the capacitor-based power source in response to an abnormality signal, h) the energy recycling circuit protecting the control module from an overvoltage damage and recovering the energy generated when the brake motor is reversed. a) a caliper connected to the end of a mechanical transmission mechanism for clamping a brake disc, b) a capacitor-based power source and c) at least one electric brake device, the electric brake device comprising a motor that acquires electric power from the capacitor-based power source via a power supply main circuit to generate a braking force, wherein d) the electromechanical brake system further comprises an energy recycling circuit connected in parallel to the power supply main circuit, the energy recycling circuit comprises a unidirectional conduction element and/or a voltage regulating element (53, 54), e) when the brake force is reduced or the brake is at least partially released in response to a braking demand, the motor generates energy which is returned to the capacitor-based power source via the energy recycling circuit, f) the electromechanical brake system further comprises a protective switch assembly, the capacitor-based power source is electrically connected to the motor through the protective switch assembly and the protective switch assembly is configured to control forward conduction of the power supply main circuit and g) the electric brake device further comprises a control module, which is electrically connected to the motor and the protection switch assembly, and controls the protective switch assembly to cut off an electrical connection between the motor and the capacitor-based power source in response to an abnormality signal, h) the energy recycling circuit protecting the control module from an overvoltage damage and recovering the energy generated when the brake motor is reversed.