Peroneal muscular dystrophy, also known as Charcot–Marie–Tooth disease (CMT), which was first described in 1886 by three medical experts, Charcot and Marie in France and Tooth in England, CMT, also known as hereditary motor sensory peripheral neuropathy (HMSN), is one of the most common hereditary peripheral neuropathies It is one of the most common types of hereditary peripheral neuropathy. The characteristics are as follows: 1. Family history, mostly autosomal dominant. 2. 2, age of onset: childhood or adolescence onset, the incidence of males is about four times that of females. Clinical manifestations: progressive distal limb muscle weakness and myasthenia, mostly accompanied by “crane legs” and “bowed feet”, hyperalgesia, weakened or absent tendon reflexes, limbs are mostly symmetrically affected and slowly progressive course. 4. According to the neurophysiological findings and pathological features, CMT can be divided into 2 types: CMT1 type —- demyelinating type; CMT2 type —- axonal type. 5, peripheral nerve biopsy has “onion ball-like changes”. 6, the prognosis of the disease is still good, many patients can still live for decades after the onset of the disease, active treatment and symptomatic treatment can improve the quality of life of patients.