Rosacea is a skin disease caused by a variety of factors, such as the growth of redness or congestion in the central skin of the face, and is more prevalent in women. There are many causes of rosacea, such as frequent smoking and drinking, spicy food and endocrine disorders and gastrointestinal disorders, which may trigger the disease. These factors can make the capillaries of the facial skin stimulated or damaged, the regulatory function is weakened, in a state of prolonged expansion, it will make the skin congestion. In addition, repeated localized skin infections can lead to the growth of erythema and the appearance of rosacea. Some external factors can also lead to rosacea. For example, working in high temperatures, blowing in the field or being stimulated by cold, etc., may damage the blood vessels of the facial skin. Certain mental factors can also lead to rosacea. Treatment for rosacea needs to be carried out promptly. It can be treated by taking oral antibiotics such as tetracycline or drugs such as isotretinoin, or estrogen if a woman is menopausal and rosacea is more serious. At the same time, some antibiotic ointment and retinoic acid preparations can be used topically to kill bacteria and reduce local inflammation. Specific treatment should be sought from a professional doctor. The causes of rosacea are many, such as internal and external stimulation of tobacco, alcohol and spicy diet, endocrine and gastrointestinal insufficiency, as well as external wind and sunlight may cause, medication has a certain effect.