Frequent colds after drinking may be caused by not paying attention to warmth after drinking and bacterial viral infections. 1. Not paying attention to warmth: If the patient drinks too much or loses consciousness, and is in a cold environment after drinking, it is easy to catch a cold without paying attention to preventing cold and keeping warm, which leads to the patient catching a cold. 2. Bacterial and viral infections: the body’s immunity decreases after drinking, which easily induces various bacterial and viral infections. Disease-causing microorganisms enter from the nasal cavity, resulting in nasal mucosa congestion, swelling, increased secretions, may cause symptoms such as runny nose, sneezing, nasal congestion, cough. It is recommended to reduce the number of alcohol, usually pay attention to the body’s cold and warmth, but also pay attention to diet, increase exercise, improve the body’s metabolism, increase the body’s immunity, can reduce the occurrence of colds.