Chest congestion after drinking may be caused by allergy, alcohol stimulation, or coronary artery stenosis. 1. Allergy: If there is drinking or chest congestion, it may be due to allergy to alcohol, which induces bronchospasm after drinking. Symptoms such as accelerated respiration or dyspnea will be manifested as chest congestion and inability to breathe. 2. Alcohol stimulation: chest blockage after drinking, may be due to alcohol stimulation, drinking will cause some stimulation of the heart, resulting in accelerated contraction of the heart muscle. Most of the symptoms of chest blockage are transient, and will be relieved and return to normal after a period of time. 3. Coronary artery stenosis: If you suffer from coronary artery stenosis, general activities can meet the normal demand for palpitations, if you drink, the heart load rises, the coronary artery blood supply for the myocardial demand can not be met, the myocardium will be hypoxia and ischemia, there will be a drinking chest blockage can not come to the gas situation. If there is a chest blockage after drinking, it is recommended to closely observe, abnormalities in a timely manner to seek medical attention, and follow the doctor’s instructions for symptomatic intervention.