If the patient has chest tightness, shortness of breath and dyspnea accompanied by sputum: First, consider acute infections of the respiratory system, such as acute bronchitis, acute pleurisy, massive pneumonia, pleural effusion, and lung infection, all of which can lead to coughing and sputum and dyspnea accompanied by symptoms and performance of chest tightness and shortness of breath. Secondly, for other diseases of the respiratory system, often in various factors leading to various types of pneumothorax or obvious tumor occupancy in the respiratory tract, these conditions will also have this symptom, but usually with cough, cough and sputum with blood in the sputum. Finally, cardiogenic diseases, such as coronary artery disease, angina pectoris, acute myocarditis, or other cardiogenic diseases causing left heart failure or severe malignant arrhythmia, may also have this clinical manifestation.