The invention discloses a parking brake control mechanism, which comprises a brake handle, a stay cable assembly and a brake handle locking mechanism, wherein one end of the brake handle is rotatably connected with a toothed plate seat through a rotating shaft, and a fan-shaped toothed plate is arranged on the toothed plate seat; the stay cable assembly is linked with the brake handle and includes a pull rod and a stay cable wiring board, one end of the pull rod is connected with the stay cable wiring board, and the other end of the pull rod is connected with a rotating shaft component on the rotating shaft; and the brake handle locking mechanism includes the toothed plate seat, a push rod, a push rod seat, a return spring and a button, one end of the push rod is provided with a pawl, the other end of the push rod is arranged in an inner hole at the end of the brake handle to be connected with the buttonthrough the return spring and the push rod seat, and the pawl is unlocked from the fan-shaped toothed plate. The parking brake control mechanism has the advantages that the technical structure is simple, the push rod is used as a pawl unlocking transfer device, reliability is good, durability is high, transmission efficiency is high, the stay cable wiring board is arranged under the car body floor for easy arrangement and after sales maintenance, and the button can be plated with chrome, so that the parking brake control mechanism can be beautifully shaped, and can be popularized on a large scale.