Shortness of breath and dyspnea after drinking alcohol may be due to the development of alcohol allergy, or it may be a symptom of other diseases, such as angina, asthma and so on. Alcohol allergy is the lack of acetaldehyde converting enzyme in the patient’s body thus leading to allergic symptoms, when the patient drinks alcohol, alcohol will act as an allergen causing a series of symptoms. After the patient develops alcohol allergy, it will show symptoms such as skin flushing, difficulty in breathing, hoarse voice, and itching all over the body. When patients drink a lot of alcohol can make the sympathetic nerve excitation, coronary artery spasm, aggravate myocardial hypoxia and thus induce angina pectoris, and patients show symptoms such as dyspnea, chest pain and shortness of breath. Alcohol will cause stimulation of the patient’s airways thus inducing an asthma attack, the patient will experience dyspnea, chest tightness and wheezing and other symptoms. Difficulty in breathing after drinking alcohol, you can go to the hospital in time, follow the doctor’s advice and reasonable treatment.