If the patient always feels chest tightness and obvious congestion in the heart in the near future: 1. First of all, we should consider that the patient has cardiovascular diseases, such as coronary heart disease, unstable angina or arrhythmia, heart failure, all of which will have such clinical symptoms; 2. For other cardiogenic diseases, such as heart valve disease, congenital heart disease, rheumatic heart disease, these conditions will also have chest tightness and congestion; 3. For respiratory system diseases, such as acute attacks of chronic bronchitis, asthma, chronic obstructive pulmonary emphysema, chronic pulmonary heart disease, and pulmonary hypertension, which also lead to insufficient arterial oxygen saturation and low partial pressure of oxygen, therefore, there will be chest tightness and shortness of breath; 4. For patients with plant nerve dysfunction, there will also be such clinical manifestations in cardiac neurosis.