If it is a drug to supplement zinc, it can be taken according to the instructions of the drug. It can be taken before or after meals, and it must not be taken on an empty stomach. If taken on an empty stomach, it will affect drug absorption. The food is also rich in zinc. Parents can also supplement their children with zinc through food. They can eat some pig liver, egg yolk, fungus, oysters, milk, eggs, prawns, green leafy vegetables, pitaya, kiwi fruit and other foods for their children. At ordinary times, they also insist on basking in the sun for children.