Protruding sternum is a very common symptom in children, but parents must pay great attention to it. Most of the protruding sternum in children is caused by insufficient intake of calcium or poor absorption of calcium, and very few of the symptoms are congenital. When this happens in life, parents should give their children timely calcium supplementation, usually take more calcium tablets, take the child for outdoor aerobic exercise, and get more sunlight to promote the absorption of calcium in the child’s body. At the same time, we should also pay attention to the child’s dietary supplements, eat more fish, eggs and soy products and other calcium-rich food, to supplement protein and calcium, but also pay attention to the balance of nutrition, to change the child’s bad habits of picky eating. You can also supplement cod liver oil, eat less puffed food, if necessary, you can also go to the hospital to seek help from the doctor in order to promote the healthy development of the child’s body.