Linkage brake control device of bicycle

The utility model discloses a bicycle linkage brake control device which comprises an installation box, a hand brake assembly and brake parts, the installation box is arranged on a bicycle, the hand brake assembly and the brake parts are arranged in the installation box, the brake parts are arranged on the two sides of the hand brake assembly and movably connected with the hand brake assembly, and a front wheel hand brake and a rear wheel hand brake are connected with the hand brake assembly respectively. The front and rear wheel hand brakes can independently drive the hand brake assembly to move, and then drive the brake part connected with the hand brake assembly to move to brake the front and rear wheels. The hand brake assembly has the advantages that the hand brake cables connected with the two hand brakes of the front wheel and the rear wheel are integrated together through the hand brake assembly, during braking, the hand brake assembly can be driven to move by kneading any one of the hand brakes of th