Redness of the face after running may be a normal physiological phenomenon, or it may be caused by certain diseases. 1. Physiological factors: when running, the muscles of the whole body need to be exercised, blood circulation is accelerated, metabolism is accelerated, and capillaries are expanded, which can lead to facial redness. In winter, the weather is cold, the blood circulation in the body is accelerated when running, capillary expansion, encountering the stimulation of cold air, resulting in facial redness. 2. Pathological factors: summer weather is hot, running face red, with dizziness, nausea and other symptoms, consider and heat stroke. Jogging red face, but also to understand whether with ischemic cardiomyopathy, resulting in red face after exercise, patients may be accompanied by dyspnea, chest pain and other manifestations. Redness of the face after jogging, after resting the symptoms can be relieved, considered a normal phenomenon. Redness after jogging, or with symptoms of heat stroke, need to consult a doctor in time to avoid serious harm.