Children with yellow hair may be related to heredity, but also may be the lack of copper, iron, zinc, vitamin D3 and other elements lead to. 1. Copper deficiency: Hair melanin generation and growth process, need a large number of copper-containing tyrosinase. If the body lacks copper, resulting in decreased tyrosinase activity, can lead to melanin metabolism disorder and hair yellowing. 2. Iron deficiency: iron deficiency can cause iron deficiency anemia, bone marrow hematopoietic function decline, blood cell reduction, thus reducing the supply of nutrients to the hair, hair yellow phenomenon, but also accompanied by pale, cold limbs, dizziness and other symptoms. 3. lack of zinc: lack of zinc affects human growth and development, easy to appetite, digestive function, the lack of nutrients in the body, the hair is prone to yellowing and shedding of symptoms, serious will also lead to growth and development retardation. 4. lack of vitamin D3: children lack of vitamin D3 will affect the absorption of calcium, children’s bodies lack of calcium, there will be yellow hair. It is also accompanied by symptoms such as sleepless nights, night sweats and irritability. Yellow hair in children is not only related to heredity, but also related to the lack of nutrients, and some will be accompanied by related uncomfortable symptoms. Parents are advised to observe carefully and seek prompt medical attention if they find yellow hair with abnormal symptoms to identify the cause of the problem and give symptomatic treatment to improve the symptoms.