Blood vomiting in cirrhotic ascites is mainly what we often call upper gastrointestinal bleeding, which is called vomiting blood in medical terminology. The bleeding above the flexural ligament of the patient is called upper gastrointestinal bleeding because the vessels of the esophagus and fundic veins flow back to the liver through the portal vein. After cirrhosis of the liver, the pressure of the portal vessels increases, which causes the small vessels behind, such as the esophagogastric fundic veins to varices, which are like our hands when they are varicose. In normal times, the fundic vessels are invisible, but once cirrhosis of the liver is over, the fundic vessels are protruding one by one very thickly, and when the pressure is high, it will be like a water pipe, which will lead to rupture, and then blood vomiting will occur. Vomiting blood is mainly caused by the pressure of the blood, and the blood vessels in the esophagus and fundic veins are broken, which is not the same as bleeding caused by an ordinary ulcer. An ulcer is a trauma and does not damage a large blood vessel. Cirrhosis of the liver damages a relatively large blood vessel and is of the nature of vomiting blood.