If your baby has chest pain, pay attention to the area where the pain is in your child. If it is in the middle of the chest, it is likely that the pain is caused by diseases of the stomach, chest muscles or lungs, so pay attention to whether the child has symptoms such as coughing, coughing up phlegm, acid reflux and belching. If the pain is caused by a fall or chest sprain, it is also likely to produce chest pain. You can go to the hospital for a chest X-ray, which has good diagnostic and differentiation significance in determining whether the chest pain is caused by a local muscle sprain or lung inflammation. Babies with diseases such as myocarditis, which can lead to myocardial ischemia, are also likely to induce chest pain, which can be determined by doing electrocardiogram, cardiac ultrasound, and laboratory tests for cardiac enzymes, and should be treated promptly after a clear diagnosis. It is also necessary to exclude chest pain caused by congenital heart disease, and this disease should be diagnosed and treated as early as possible.