The sequelae of carpal tunnel syndrome surgery are divided into several aspects. First, the patient feels no reduction in finger numbness after surgery, with an incidence of about 7%-20%. The reason is that the surgical release is not complete, or because the patient’s own common diseases of internal medicine are not effectively treated, or the patient has a double card syndrome, where the patient has a carpal tunnel seizure and possibly a peripheral nerve seizure, and possibly a seizure of the elbow tunnel above the forearm. Because of fibrotic changes in the median nerve or damage to the palmar nerve of the median nerve during surgery, there is numbness in the corresponding area and even painful scarring. Because the carpal tunnel is cut open, bowstring-like changes tend to occur, which are taut like a bowstring, and some patients feel discomfort. Postoperative tendon adhesions may occur, because when the surgery is done, the synovial membrane on the surface of the tendon will be removed for complete release, resulting in adhesions between the exposed tendon and the surrounding tissues, which requires the patient’s postoperative cooperation. There are also patients who may experience partial entrapment of the cervical nerve roots and pain, which may even remain after surgery and may be partially relieved, similar to the occurrence of double entrapment. In addition, there may also be postoperative sequelae still present due to incorrect diagnosis.