Shortness of breath may be caused by respiratory diseases or cardiogenic or severe anemia. Different treatment methods are available for different causes, and corresponding treatment should be given as follows: 1. chronic obstructive pulmonary disease: anti-infection, oxygen, bronchodilator and other symptomatic treatments should be given; 2. massive pneumonia: anti-infection treatment should be given; 3. cardiogenic disease: anti-heart failure treatment should be given; 4. severe anemia: anti-anemia treatment should be given; if the shortness of breath is transient, observation at home is sufficient; if the shortness of breath is persistent, it is recommended to visit a hospital to find out the cause of the disease.