If the heart has the same painful symptoms as forked breath, the following factors should be taken into consideration: 1. organic lesions of the heart, such as coronary atherosclerotic heart disease, unstable angina, heart valve disease, myocarditis, pericarditis, infective endocarditis, hypertrophic obstructive cardiomyopathy, or patients with various factors that lead to severe contraction of cardiovascular arteries, causing significant ischemia of the myocardium. 2. In addition to cardiogenic factors, respiratory system diseases should also be considered, such as patients with tension pneumothorax, or with obvious massive lung infection, pleural effusion, when there will also be heart and bronchial pain. 3, patients with some digestive system diseases, such as bile reflux gastritis, erosive esophagitis will also have the above-mentioned situation. 4, cardiac neurosis will also have such clinical manifestations.