Running breathlessness may be normal physiological factors, may also be cardiomyopathy, coronary heart disease, bronchial asthma and other diseases, need to according to the condition of the symptomatic treatment. 1. Normal physiological factors: Insufficient exercise or excessive exercise may lead to insufficient lung capacity, which may result in running breathlessness. It can be improved by strengthening exercise and improving physical fitness. 2. Cardiomyopathy: The main manifestation of cardiomyopathy is the abnormal enlargement of the heart, the emergence of arrhythmia, heart failure and other conditions, and the emergence of exertional dyspnea when running or other strenuous exercise. It can be treated with medicines such as metoprolol succinate extended-release tablets and compound furosemide tablets under doctor’s guidance. 3. Coronary heart disease: coronary heart disease can also lead to running breathlessness, when the coronary arteries are blocked, it will cause the heart blood supply, oxygen supply is insufficient for strenuous exercise, there is breathlessness, chest tightness and other symptoms. You can use aspirin enteric-coated tablets, Tegretol tablets and other drugs to relieve under the advice of the doctor. 4. Bronchial asthma: the main manifestations of this disease are dyspnea, chest tightness, recurrent asthma, etc., which can be aggravated when running. You can use ipratropium bromide aerosol, methylprednisolone tablets and other medications as prescribed. Only through the running breathlessness this symptom is unable to determine the specific disease and be treated, therefore, in the body of the abnormal situation should be timely medical treatment, check out the specific causes of the disease for symptomatic treatment.