Four-month-old baby zinc deficiency, the first choice is dietary supplement, dietary supplement is the best way, in line with the human body metabolism, the baby’s complementary food can choose some high zinc element of food, such as flying fish, shrimp, nori, fishmeal, sesame seeds, peanuts, pig’s liver and so on. However, the speed of food supplementation is slow, and the daily amount of supplemental food for four-month-old babies is also limited, if the child’s zinc deficiency is more serious, and want to quickly replenish zinc, you should use zinc supplements in a timely manner, such as zinc proteins, zinc proteins is a purely biological preparation, high activity, easy to absorb, fast results, the specific dosage of the doctor’s guidance to the interview shall prevail.