The child’s self-reported chest tightness is generally normal if it is only after behaviors such as exercising or staying up late; if chest tightness occurs frequently or the symptoms are heavy, it may be related to upper respiratory tract infections, cardiovascular system diseases, respiratory system diseases, and diaphragm lesions, and it is recommended to seek medical treatment. Common causes and treatment 1, normal physiological phenomenon: children strenuous exercise or stay up late, resulting in lack of oxygen to the organism, may appear chest tightness symptoms, generally do not need treatment, rest can be relieved; 2, respiratory tract infection: caused by pathogenic infections tonsillitis, bronchitis, pneumonia, can appear breathing obstruction resulting in chest tightness. In the treatment of anti-infection-based, the presence of bacterial infection can follow medical advice to take amoxicillin clavulanic acid potassium, cephalosporin antibiotics, etc.; 3, cardiovascular system diseases: such as congenital heart disease, mostly related to women taking drugs during pregnancy, infection with viruses, resulting in fetal heart malformations. The manifestation is poor growth and development, chest tightness, breastfeeding difficulties and wasting, etc. It is generally recommended to be treated by surgery. Cardiac inflammation and arrhythmia can also lead to chest tightness, which requires timely consultation and medical advice for anti-inflammatory and anti-arrhythmic treatment, and intervention if necessary; 4, non-infectious diseases of the respiratory system: such as asthma, the main symptoms are coughing, wheezing, dyspnea, chest tightness, etc., which is generally treated symptomatically, such as the use of salmeterol ticapone powder inhaler as prescribed by the doctor; 5, diaphragm lesions: such as diaphragm expansion, which is relatively rare and can be caused by diaphragm The diaphragm muscle fiber dysplasia, accompanied by pulmonary dysplasia, often with dyspnea, chest tightness, nausea, vomiting, etc.. If the symptoms are severe, surgery is recommended. Attention to the child’s daily habits, regular rest, avoid overwork; if there is discomfort, do not use drugs at will, it is recommended to seek the help of a professional doctor.