Children with yellow hair may be due to the lack of vitamins and trace elements, protein and lead to. 1. Lack of vitamins and trace elements: the color of a child’s hair is related to its nutritional status, if there is a nutritional deficiency, it will generally be manifested in the child’s hair yellow. Generally due to the lack of vitamin A, B₂ and iron, copper, zinc and other trace elements. 2. lack of protein: protein is mainly to maintain the normal structure of the human body, but also the main components of the hair, so when the child body lack of protein, not only will appear yellow hair, but also hair thinning, hair loss and other serious problems. Therefore, when a small child with yellow hair, should be in the exclusion of genetic factors, based on the consideration of the existence of malnutrition, generally consider the lack of vitamin A, B₂ and iron, copper, zinc and other trace elements, or protein. To eat more fresh vegetables and fruits. It is recommended to consult a specialized hospital, a specialist physician diagnosis and treatment.