The causes of shortness of breath may be severe coronary heart disease, pulmonary heart disease or cardiac insufficiency, or pulmonary edema due to blood stasis, which can cause breathing difficulties in severe cases. Patients with emphysema, bronchitis or pulmonary fibrosis disease should go to the hospital for treatment in time to avoid more serious diseases. Because most of the symptoms of shortness of breath and wheezing are caused by lung diseases, you should try to smoke less or quit smoking, not to work in an environment with a lot of dust, and to eat lightly and drink more water.