Drinking alcohol and vomiting easily may be caused by alcohol sensitivity, abnormal liver and kidney function, chronic gastritis and other reasons. 1. Alcohol sensitivity: If the patient’s body is sensitive to alcohol, he will vomit after drinking. After drinking alcohol, alcohol will be oxidized into acetaldehyde in the body. Under the effect of acetaldehyde, drinking a large amount of alcohol will stimulate the gastric mucosa and cause vomiting. 2. Abnormal liver and kidney function: After drinking alcohol, it will be absorbed through the liver and kidney cycle. If you suffer from abnormal liver and kidney function, the liver fails to decompose ethanol, and when you drink too much alcohol, alcohol poisoning will occur, which will also easily lead to vomiting. 3. Chronic gastritis: If you suffer from chronic gastritis and other diseases, due to the strong stimulation of alcohol, it will cause an increase in gastric juices, stimulate the gastric mucosa, leading to stomach cramps and violent contractions, resulting in the condition of easy vomiting. If you drink alcohol and vomit easily, you must pay attention to it, go to the hospital in time, clarify the cause of the disease under the guidance of the doctor, and carry out appropriate treatment and therapy.