Most children have a dry mouth, thirst, dry skin, and constipated stools. In addition, Yin deficiency can also lead to internal heat in children, and their throats are often sore. Therefore, if a child has yin deficiency, parents are advised to firstly give the child more water to directly replenish the child’s dryness caused by yin deficiency by adding water. Secondly, parents can also give their children foods or medicines that nourish yin, such as foods that nourish yin include lily of the valley, sage, wolfberry, etc., while commonly used Chinese medicines for treating yin deficiency include sage and maitong soup and Liu Wei Di Huang Wan, etc. In addition, if a child has symptoms of yin deficiency, it must be ruled out whether it is caused by dry syndrome. At this time, parents should take the child to have a laboratory test on immune function and autoimmune antibodies and other indicators. If the test results suggest the existence of dry syndrome, treat the disease in time.