To provide a parking brake device which is simple in mechanism, capable of unifying right and left braking forces, and manufactured at low cost.

The parking brake device 10 comprises a case 11, a flexible conductive pipe 41 with one end movable along the first direction, a middle portion thereof curved, and the other end movable along the second direction, a flexible inner cable 42 with one end locked to the case 11 and slidably stored in the conductive pipe, and the other end movable, a first brake cable 15 to be pulled by the other end of the conductive pipe, a second brake cable 16 to be pulled by the other end of the inner cable, and driving means (12 and 13) which reduce the rotation of a motor M and push/pull one end of the conductive pipe 41 by converting the rotation of the motor into a straight motion by a screw mechanism.