Rosacea, medically known as rosacea, usually occurs in middle-aged people between 30 and 50 years of age and is characterized by flushed skin, dilated capillaries, papules and pustules. The lesions are mostly located on the tip of the nose, the perinasal area and the cheeks, and are often accompanied by local capillary dilation, which can form a nasal redundancy in the late stage. Since the specific cause and pathogenesis of rosacea are not clear, it may be related to factors such as mental tension, alcoholism, spicy food, high temperature and cold stimulation, facial vasomotor nerve disorder, gastrointestinal dysfunction, endocrine disorder and follicular worm mite infection. Its pathogenesis may be based on seborrhea, due to infection and hot and cold stimulation and other factors, resulting in dysfunction of facial vasomotor nerves and long-term capillary dilation, which leads to the appearance of lesions. From its etiology and pathogenesis, sun exposure, consumption of spicy food, alcohol consumption, high temperature or cold stimulation, mental tension and emotional excitement, and endocrine disorders can be used as triggering and aggravating factors for this disease. For patients with rosacea, attention should be paid to preaching plain living, abstaining from spicy and stimulating foods and drinking alcohol, avoiding sun exposure and excessively cold and hot stimulation avoiding mental tension, and maintaining a good state of mind and life routine. Patients with gastrointestinal diseases should be treated in a timely manner to keep their bowels open. Rosacea is caused by a variety of factors, but it is clearly associated with vascular hyperreactivity. Typical patients with rosacea have a history of easy facial flushing, and foods and medications that can cause vasodilatation of the face may lead to more rapid development of rosacea. Elevated acetaldehyde in the body due to alcohol consumption is a recognized trigger for facial flushing. Some studies have shown that facial flushing may be accompanied by a small amount of plasma exudation, the latter of which can stimulate an inflammatory response that is enhanced by recurrent episodes of vasodilation, which may be the main cause of exacerbation of the condition in rosacea patients after alcohol consumption. Several studies by domestic and foreign scholars have not found an association between alcohol and rosacea development. All concluded that alcohol did not play an important role in the pathogenesis of rosacea. In conclusion, the onset of rosacea has nothing to do with alcohol, but alcohol consumption can aggravate the condition of rosacea.