Four-month-old babies with zinc deficiency will generally show the following common manifestations: first, inattention, hyperactivity, slow intellectual development. Second, loss of appetite, anorexia and picky eating, heterophagy, growth hindrance. Third, low immunity, often cold and fever. Fourth, loss of sense of taste. Fifth, poor sleep, excessive sweating, yellow and thin hair. Found that the child lack of zinc to make up in time, eat more zinc-rich foods, usually dietary zinc because it is advisable to eat more coarse flour, tofu and other soy products, beef, lamb, fish, lean meat, peanut rice, sesame, dairy products and other foods. The above content is for reference only, specific medication, treatment, please refer to the doctor’s guidance.