The carpal tunnel is a bony-fibrous tube in the metacarpal region of the wrist through which the flexor digitorum longus and four superficial flexor tendons, four deep flexor tendons, and the median nerve enter the hand. The carpal tunnel is on the palmar-radial side of the wrist and consists of the carpal bones and the transverse carpal ligament. The transverse carpal ligament is tough with a thickened proximal margin and is a major factor in compression of the median nerve. The median nerve is superficially located in the carpal tunnel and is susceptible to compression by the transverse carpal ligament, resulting in injury. The onset of carpal tunnel syndrome is associated with chronic injury. It tends to develop when hand and wrist labor is intense. There are many causes of carpal tunnel syndrome, which can be roughly divided into three categories: 1. Local factors (1) Factors causing reduction of carpal tunnel volume: such as Colles’ fracture, Smith’s fracture, navicular fracture and dislocation of the lunate bone after malunion, as well as acromegaly. (2) Factors causing increase in the content of carpal tunnel: such as lipoma, fibroma, tendon sheath cysts, abnormal position of the muscles in the carpal tunnel (the superficial flexor muscle belly is too low, the earthworm muscle belly is too high), non-specific synovitis, hematoma. 2.Systemic factors (1)Factors causing neurodegeneration: such as diabetes mellitus, alcoholism, infection, gout and so on. (2) Factors that change the fluid balance: such as pregnancy, oral contraceptives, long-term hemodialysis, hypothyroidism. (3) Postural factors: excessive wrist labor, such as computer operators, walking with crutches for the disabled, repeated flexion and extension of the fingers and wrist joints. 77 cases of paraplegic paraplegia patients surveyed by Gellman et al. found that 38 of them (49%) suffered from carpal tunnel syndrome. It should be noted, however, that the etiology of carpal tunnel syndrome is unclear in some of these patients.