The invention discloses automatic assembling equipment for bicycle hub brake pads. A hub feeding mechanism, a brake pad positioning mechanism, an interval feeding mechanism, a three-axis movement mechanism and a locking device are arranged on a machine frame, wherein the locking device comprises a sliding seat, a CCD camera, a locking module and a brake pad feeding mechanism, the CCD camera is arranged on the sliding seat, the locking module comprises a first switching cylinder, a first sliding rail, a first sliding block and a locking mechanism, the first sliding block is slidably arranged onthe first sliding rail, the locking mechanism is arranged on the first sliding block, the brake pad feeding mechanism comprises a second switching cylinder, a second sliding rail, a second sliding block, a rotating motor and a suction cup, the second sliding block is arranged on the second sliding rail in a sliding mode, and is connected with the stretchable end of the second switching cylinder,the rotating motor is arranged on the second sliding block, and the output end of the rotating motor is connected with the suction cup. According to the equipment, the precision of the brake pad on ahub is guaranteed, a screw is prevented from being scratched and damaged, and the production efficiency and quality are improved.