After drinking wine spitting blood is considered to be the occurrence of acute gastric mucosal injury, but also may be itself suffering from gastric diseases worsened after drinking. 1. Acute gastric mucosal injury: if you drink on an empty stomach or drink too much alcohol, it is likely to lead to direct damage to the gastric mucosa, but also easily lead to cardia mucosal tear, thus spitting blood, often accompanied by stomach pain. 2. Gastric diseases: it is also possible to suffer from gastric diseases, such as gastritis, gastric ulcer, especially gastric ulcer patients, after drinking alcohol, due to alcohol stimulation will lead to ulcer aggravation, and even lead to blood vessel damage, which will cause vomiting blood. 3. Stress ulcer bleeding: drinking too much alcohol, causing damage to the gastric mucosa, causing stress ulcer stomach bleeding. After drinking alcohol and vomiting blood should be timely to the hospital, with the doctor to do the relevant examination, and take timely treatment to avoid aggravation of the condition. And generally need to temporarily fasting, to avoid causing the burden of the stomach increased.