Vitamin D can be given to children in the following ways: First, vitamin D can be given in drops directly into the child’s mouth, which is the most common way of feeding. Parents can cut open the other side of the vitamin D capsule, open the child’s mouth, and put the vitamin D drops directly into the child’s mouth, and the child will reflexively swallow the vitamin D. This is a very simple and easy way. Secondly, children can be given vitamin D in their milk, which is the second best way. Because some children cry and get upset when giving vitamin D drops, it is easy to choke and cough, so putting vitamin D in a bottle will prevent choking.