After drinking alcohol, the nose may not be able to pass gas with the stimulating effect of alcohol on the human body, the existence of upper respiratory tract infection or allergic rhinitis and other diseases. 1. Alcohol stimulates the nasal mucosa, resulting in congestion and edema, causing nasal obstruction and nasal congestion. 2. Upper respiratory tract infections are often accompanied by nasal congestion, runny nose and other symptoms, after drinking alcohol, stimulate the nasal mucosa, will aggravate nasal congestion, ventilation and other symptoms. 3. Allergic rhinitis, drinking alcohol may lead to allergic rhinitis attack, causing nasal congestion, runny nose, itching and other symptoms, alcohol stimulation of the nasal mucosa, causing congestion and edema, will also aggravate the symptoms of nasal congestion. There are respiratory tract infections or allergic rhinitis people, should not drink alcohol, to avoid aggravating the symptoms of nasal congestion, affecting the quality of life.