Modern medicine classifies cases of gray hair turning white in whole or in part as congenital or acquired. Congenital premature graying is mostly caused by heredity, often with a history of inheritance within the family for several generations, hereditary defects, albinism; the gradual onset of gray hair in children belongs to the acquired gray hair, which occurs mostly with neurological factors, malnutrition, endocrine disorders and systemic chronic wasting diseases. Chinese medicine believes that this disease is mainly due to liver and kidney deficiency, qi and blood deficiency. The clinical manifestations of congenital juvenile white are: the initial hair has a few sparse scattered white hair, interspersed with black hair in a flowery white, then, the white hair can gradually or suddenly increase. Most of the “less white hair” is generally asymptomatic, and there is no clinical evidence of the causative gene locus, so there is no definitive treatment. For the symptomatic gray hair, Chinese medicine will be the cause of three major categories: 1, congenital deficiency, liver and kidney deficiency: clinical manifestations are often accompanied by dizziness, dizziness, insomnia, deafness, waist and knee weakness, mental lassitude and other symptoms, red or dark fat tongue, weak string or fine pulse. 2, evil heat into the blood: manifested by symptoms such as burning scalp, itching, white flakes, insomnia and dreaminess, false irritability, etc., with red tongue and counted or fine pulse. 3, liver depression and qi stagnation: its white hair appears quickly, generally with mental and emotional factors can be detected, most patients are accompanied by emotional depression, irritability without thinking about food and other symptoms, the tongue is red, pulse string or string number. Modern research has found that more intake of iron and copper can help reduce gray hair; lack of vitamin B1, B2, B6 is also an important cause of less gray hair, so it is recommended to increase the intake of B vitamins; the basis of melanin formation is tyrosine, pay attention to more intake of tyrosine-rich food. All these can help reduce gray hair.