If a nine-week-old child does not like to eat, the specific treatment is as follows: First, clarify whether the child has a deficiency of trace elements and vitamin D. If the child has a deficiency of zinc among the trace elements, the child will have a lack of appetite and the phenomenon of paranoid and picky eating, you can give the oral supplement of zinc gluconate, and the child’s appetite can be restored to normal after the supplement of zinc. If the amount of activity is low, the child will also show a lack of desire to eat. It is important to increase the physical activity of the child, such as running or jumping rope, playing basketball, etc., which can promote the intestinal peristalsis of the child, and the child will show a willingness to eat. Third, you can appropriately give supplemental lysine vitamin B12 granules and other drugs, is conducive to promoting children’s appetite, children will be willing to eat, while the growth and development of children also has a very good role in promoting.