A parking function-equipped electric brake device comprising: a brake rotor ; a friction material configured to be brought into contact with the brake rotor ; a friction material operation mechanism configured to bring the friction material into contact with the brake rotor ; an electric main brake motor configured to drive the friction material operation mechanism ; a parking brake mechanism configured to achieve a parking brake function by using the friction material and the friction material operation mechanism ; a housing ; and a control device configured to perform control of a braking force generated by the main brake motor and control of the parking brake mechanism , wherein the parking brake mechanism includes: an electric parking brake motor provided coaxially with one of rotational shafts that transmit a torque from the main brake motor to the friction material operation mechanism ; a linear motion mechanism configured to move a rotor of the parking brake motor in an axial direction of the rotational shaft to which the parking brake motor is mounted; and an engaging mechanism including a rotor-side engaging portion provided to the rotor of the parking brake motor , and a housing-side engaging portion , provided in the housing , that engages with the rotor-side engaging portion so as to prevent rotation of the rotor when the rotor is moved linearly to a predetermined position by the linear motion mechanism , engagement of the engaging mechanism achieving a pressing force holding function of holding an angle of the rotational shaft against a reaction force of a pressing force of the friction material . a brake rotor ; a friction material configured to be brought into contact with the brake rotor ; a friction material operation mechanism configured to bring the friction material into contact with the brake rotor ; an electric main brake motor configured to drive the friction material operation mechanism ; a parking brake mechanism configured to achieve a parking brake function by using the friction material and the friction material operation mechanism ; a housing ; and a control device configured to perform control of a braking force generated by the main brake motor and control of the parking brake mechanism , wherein the parking brake mechanism includes: an electric parking brake motor provided coaxially with one of rotational shafts that transmit a torque from the main brake motor to the friction material operation mechanism ; a linear motion mechanism configured to move a rotor of the parking brake motor in an axial direction of the rotational shaft to which the parking brake motor is mounted; and an engaging mechanism including a rotor-side engaging portion provided to the rotor of the parking brake motor , and a housing-side engaging portion , provided in the housing , that engages with the rotor-side engaging portion so as to prevent rotation of the rotor when the rotor is moved linearly to a predetermined position by the linear motion mechanism , an electric parking brake motor provided coaxially with one of rotational shafts that transmit a torque from the main brake motor to the friction material operation mechanism ; a linear motion mechanism configured to move a rotor of the parking brake motor in an axial direction of the rotational shaft to which the parking brake motor is mounted; and an engaging mechanism including a rotor-side engaging portion provided to the rotor of the parking brake motor , and a housing-side engaging portion , provided in the housing , that engages with the rotor-side engaging portion so as to prevent rotation of the rotor when the rotor is moved linearly to a predetermined position by the linear motion mechanism , engagement of the engaging mechanism achieving a pressing force holding function of holding an angle of the rotational shaft against a reaction force of a pressing force of the friction material . <EOS>