Breathing heart pain may be cardiogenic diseases, diseases of the respiratory system, intercostal diseases, psychological factors, neurosis, etc., and should be promptly consulted to identify the cause. 1. Diseases of cardiac origin: patients with diseases of cardiac origin, such as coronary heart disease, unstable angina pectoris, myocarditis, pericarditis, or infective endocarditis, hypertrophic obstructive cardiomyopathy, pulmonary heart disease, all of these conditions will lead to heart pain with breathing. 2. Respiratory diseases: For some respiratory diseases, such as pneumothorax, whether open pneumothorax or tension pneumothorax, the patient’s heart will be painful with breathing. 3. Intercostal diseases: some intercostal neuralgia, costochondritis, as well as damage to the intercostal muscles, may also induce chest pain, or similar symptoms of heart pain. 4. Psychological factors: such as mental tension and anxiety, may induce symptoms of pain. 5. Neurosis: It is a neurosis that is highlighted by cardiac symptoms. Cardiac symptoms mainly include chest pain, palpitations (rapid heartbeat, often accompanied by panic), chest tightness and dyspnea. If the symptoms persist or worsen, further examination should be conducted to ask the doctor to clarify the cause of the disease, and appropriate treatment should be carried out if necessary.