Peripheral neuritis refers to damage to the nerve endings due to various causes and is called peripheral neuritis. The main clinical manifestations of peripheral neuritis are symmetrical sensory abnormalities in the distal extremities, such as numbness, tingling, and ankylosis, as well as vegetative dysfunction, which is manifested by reduced sweating in the distal extremities of the patient’s body. The most common causes of peripheral neuritis are nutritional and metabolic disorders, such as diabetes mellitus, peripheral neuropathy, and alcoholic peripheral neuropathy, all of which are caused by malnutrition of the peripheral nerves. The lack of B vitamins in the body can lead to peripheral neuritis because the digestion and absorption of B vitamins in the gastrointestinal tract is reduced after alcohol abuse. For the treatment of peripheral neuritis, we need to treat the cause of the disease, as well as symptomatic nerve nutrition, commonly used methylcobalamin and epalrestat can nourish the nerves, as well as vitamin B12 and vitamin B6.