The invention discloses a finger knuckle rehabilitation apparatus which comprises at least one of an index finger knuckle rehabilitation exercise assisting part, a middle finger knuckle rehabilitation exercise assisting part, a ring finger knuckle rehabilitation exercise assisting part, a little finger knuckle rehabilitation exercise assisting part and a thumb knuckle rehabilitation exercise assisting part, at least one corrugated pipe, and a protective tool fixed to the wrist and palm, wherein the corrugated pipes are arranged on the index finger knuckle rehabilitation exercise assisting part, the middle finger knuckle rehabilitation exercise assisting part, the ring finger knuckle rehabilitation exercise assisting part, the little finger knuckle rehabilitation exercise assisting part and the thumb knuckle rehabilitation exercise assisting part and are fixed to the protective tool. Therefore, the finger knuckle rehabilitation apparatus is worn on the fingers of a patient through rubber parts on the finger knuckle rehabilitation exercise assisting parts, the corrugated pipes drive the fingers of the patient to move while forcing the rubber parts bent and straightened by controlling the air pressures in the corrugated pipes, and the patient is helped to perform rehabilitation training.