Neurotrophic factors, as the name implies, are mainly drugs that can play a nerve-nourishing role, among which B vitamins are commonly used clinically, including vitamin B1, vitamin B6, vitamin B12 and methylcobalamin, a derivative of vitamin B12, all of which can play a nerve-nourishing role. There are also new types of neurotrophic factor drugs available clinically, such as murine nerve growth factor which is now widely used in neurology, mainly For example, murine nerve growth factor is widely used in neurology, mainly for the treatment of peripheral nerve injury, such as the treatment of peripheral neuritis, trigeminal neuralgia, occipital neuralgia and Green-Barre syndrome. It is recommended that the patient should have an electromyogram to assess the degree of nerve damage if necessary, and the efficacy of the neurotrophic factor can be monitored during the treatment process.