Zinc deficiency in children is generally caused by the low zinc content of food and insufficient intake, the best way is dietary supplementation. If the zinc deficiency is serious, you can take some medicines to supplement zinc: zinc sulfate, zinc chloride, zinc glycyrrhiza granules, etc. Zinc protein is safer, has no side effects on the human body, has high activity and is easily absorbed. Don’t eat refined foods, but match them with coarse and fine foods.