Flushing is caused by capillary dilation and is usually caused by physiological factors such as emotional excitement and improper diet. In addition, it may also be caused by pathological factors such as allergies and infections. Patients are recommended to go to the hospital to clarify the causes and carry out targeted treatment: a. Physiological factors: If patients are too emotional, or drink alcohol, eat spicy, irritating food, such as hot pot, chili, onions, etc., may lead to facial redness. And part of the people living in the plateau area due to the environment of oxygen scarcity, long-term lack of oxygen can also appear facial redness, as a normal physiological phenomenon, no special treatment. Pathological factors: 1. Allergies: If the patient has allergies, it can lead to facial redness, commonly caused by allergic dermatitis, or by fever. If the symptoms are mild, they can be treated by oral loratadine, cetirizine and other antihistamines. If the symptoms are heavy, in addition to facial redness is accompanied by severe itching, you can follow medical advice to use glucocorticoids for treatment; 2, infection: If the inflammatory reaction is caused by bacterial or viral infections, in addition to facial redness, usually accompanied by fever and other symptoms. The cause of infection should be clarified and targeted treatment should be carried out. If the infection is bacterial, penicillin and cephalosporin can be used as prescribed by the doctor, and if the infection is viral, acyclovir and ribavirin can be used as prescribed by the doctor. 3, Acne: commonly known as acne, commonly found in adolescent groups, when the skin secretes too much oil and is not cleaned properly, or when the body’s androgens are high, acne can be caused, resulting in facial redness, burning and other symptoms. Patients are advised to choose the appropriate treatment according to their situation, such as medication with retinoids and antibiotics, or physical therapy such as photodynamic therapy and laser therapy. In addition, patients should also pay attention to daily conditioning, should eat more fruits, vegetables, etc., to maintain a good mood.