Frequent vomiting after drinking alcohol may be caused by gastritis, gastric ulcer and other diseases. 1. Gastritis: Alcohol stimulation of the gastric mucosa may lead to gastric mucosal congestion and edema induced acute or chronic gastritis, frequent vomiting after drinking symptoms. 2. Gastric ulcer: alcohol may stimulate the gastric mucosa leading to stress ulcers; long-term drinking may also lead to gastric mucosa congestion and edema erosion and other gastric ulcer manifestations, frequent vomiting after drinking symptoms. If the symptoms of frequent vomiting after drinking, it is recommended to go to the hospital to check gastroscopy, Helicobacter pylori breath test, pathological biopsy and other programs to find the cause of the cause of treatment under the guidance of the doctor.