Facial redness, swelling and fever can be caused by a variety of reasons and cannot be generalized, such as disease factors, medication factors and other causes of facial redness, swelling and fever, it is recommended that patients go to the hospital to clarify the cause of the disease. In addition, if the patient is due to emotion, exercise and other causes of facial redness, swelling and fever, there is no need for special treatment. Specific situation specific analysis, there are mainly the following possibilities: I. Physiological factors: 1, emotion: in a state of tension, excitement, anger, blood flow increases, which can appear facial redness, swelling and fever; 2, exercise: after exercise sympathetic nerve excitation, the face will have redness, swelling and fever; 3, diet: after the intake of spicy food and alcohol, stimulate the body’s capillary expansion, blood flow accelerated, so causing redness, swelling and fever in the face. So cause facial redness and swelling. Second, external factors: 1, climate: facial skin is thin, rich in blood vessels, in the hot and cold climate, will cause capillary abnormalities, resulting in redness and swelling; 2, topography: in the higher altitude areas, due to thin air, low oxygen content, the skin oxygen intake is insufficient. Coupled with the wind and sand as well as strong ultraviolet radiation, so that the facial skin sensitivity, red heat and swelling; 3, physical and chemical factors stimulation: sensitive skin people in the physical, chemical and other stimuli, the skin tingling, itching, redness, swelling and other abnormal symptoms. Third, drug factors: if the patient long-term use of glucocorticoids, may cause glucocorticoid-dependent dermatitis, facial complication of the symptoms is tingling or swelling sensation, as well as redness and heat. Fourth, disease factors: 1, fever: patients by viral, bacterial and other infections caused by fever, the body heat production increased, resulting in facial fever, redness and other symptoms; 2, seborrheic dermatitis: seborrheic overflow site of inflammatory skin diseases, patients with seborrheic overflow site of the subjective feeling of redness and heat; 3, contact dermatitis: patients will appear on the surface of the skin erythema, swelling, pimples and other reactions, burning sensation, distension and pain, Red heat is obvious; 4, rosacea: often in the nose and perinasal chronic inflammation, in eating stimulating foods, sudden changes in temperature and mental excitement is obvious, manifested as facial redness and heat; 5, hypertension: high blood pressure appears vasodilatation, causing local capillary congestion, resulting in patients with facial redness and heat and swelling. Patients who are prone to facial redness, swelling and fever in the diet, lifestyle habits, there are many things to pay attention to. Diet should drink more water, avoid spicy stimulation and drinking alcohol. Life should be regular, to ensure adequate sleep, to avoid triggers of facial redness, swelling and fever, to maintain a relaxed mood, through daily care to achieve the purpose of prevention.