Heart rate of 120 beats/min after drinking alcohol is generally normal. The main reason is that alcohol has an excitatory effect on the sympathetic nerves of the human body, and after drinking alcohol, the sympathetic nerves are excited and the heart rate increases reflexively, which may lead to a heart rate of 120 beats/min after drinking alcohol. This is a normal physiological phenomenon, if there is no other discomfort generally do not need special treatment, it is recommended that patients drink more water to promote alcohol metabolism. When the heart rate is accelerated, the oxygen consumption of the heart muscle will increase, which may cause patients to experience chest tightness, chest pain and other uncomfortable symptoms. In daily life, patients should maintain a stable mood and avoid bad emotions such as agitation. Adopt a scientific lifestyle, pay attention to the combination of work and rest, ensure sufficient sleep, and avoid exertion. In addition, it is recommended that when cardiac discomfort occurs after drinking alcohol, consult a doctor in time and follow the doctor’s instructions for treatment to avoid delaying the condition.