How to treat the baby’s slow growth and development, first of all, we need to know the causes of the child’s slow growth and development, and then for the cause of treatment, common causes of slow growth and development of children include the following: First, malnutrition, if the child eats less, did not add supplemental food on time, or food structure is not reasonable, will lead to malnutrition, affecting the child’s growth and development. Parents are advised to add supplementary food to their children on time to ensure adequate nutrition, a rich diet, balanced nutrition, which is conducive to the growth and development of children. Second, some diseases affect, such as thyroid disease, allergic diseases, digestive tract diseases and genetic metabolic diseases, etc., can lead to slow growth and development of children. It is recommended to take the child to the hospital for relevant examinations, to do growth and development assessment and, if necessary, genetic metabolic diseases and other related examinations, and to treat the cause according to the examination.