The main manifestations of elbow canal syndrome are numbness of the little finger and the half of the ring finger, numbness of the palmar side and the dorsal side, and inflexibility of fine hand movements (holding a pencil, holding chopsticks, etc.). If the disease is prolonged, there may be muscle atrophy of the hand and even a “claw-shaped hand” deformity. Numbness of the fingers can be caused by percussion behind the elbow. In terms of treatment, conservative treatment can be taken for a short period of time, i.e., the application of nerve-nourishing drugs. Nowadays, early surgical treatment is advocated, and ulnar nerve release anterior surgery is performed, which must mainly protect the medial cutaneous nerve of the forearm and be fixed in plaster after surgery. Most can achieve excellent results.