Symptoms and signs of median nerve entrapment are called carpal tunnel syndrome, which occurs in the carpal tunnel, and the symptoms are mainly numbness or weakness of the 3 fingers on the radial side. 1. Carpal tunnel: it is a bone-fiber tunnel consisting of the base of the carpal bone, the walls on both sides and the flexor support band as the top, and the pressure on the wrist joint is aggravated by palmar flexion and clenching the fist with force at the same time. 2. Symptoms: first of all, numbness or pain in the radial side of the three finger ends, weakness in holding objects, the worst symptoms at night to early morning, sometimes the pain will be involved in the forearm; physical examination of the thumb, finger, middle finger sensory dullness or allergy, the thumb to the palm of the powerlessness; carpal tunnel inflammation can be seen in localized bulging, can be seen on the edges of the mass, with pressure pain. Carpal tunnel syndrome should be consulted promptly to maximize the quality of life.