If a child has barbed fingers is a zinc deficiency, it is judged on a case-by-case basis, as follows: 1. It is a zinc deficiency. In addition to finger barbs, children often have other concomitant symptoms such as anorexia, partiality, picky eating, and relatively backward growth and development. When the child’s blood is tested for trace elements, there are often signs of zinc deficiency. If zinc deficiency is identified, zinc gluconate oral solution or zinc glycyrrhiza granules can be given to the child in a timely manner, which has a significant improvement effect. Zinc supplementation generally takes at least one month, if the time is too short, it cannot achieve a good effect of zinc supplementation. 2, caused by bad habits, often seen in children with bad preferences, mainly biting finger nails with teeth, tearing finger nail skin with fingers, thus leading to finger barbs, children should try to change their bad habits.