The clinical symptoms of severe gastric ulcer include abdominal pain, gastrointestinal discomfort, gastrointestinal bleeding, perforation, etc. It is recommended that patients should go to the hospital in time to receive regular and professional treatment so as not to cause more harm to the body. 1. Abdominal pain: Abdominal pain is the most common symptom of severe gastric ulcer, the pain is usually concentrated in the upper abdomen, and it will be more obvious after meals, and the pain lasts for a longer period of time, about an hour or so before it gradually relieves. 2. Gastrointestinal discomfort: Severe gastric ulcer will lead to bloating, nausea, vomiting and other serious gastrointestinal reactions, and the patient’s digestive ability will also be affected. 3. Gastrointestinal bleeding: Severe gastric ulcers may lead to gastrointestinal bleeding, and patients may experience severe symptoms such as blood in the stool and vomiting blood. 4. Peptic perforation: Severe gastric ulcers may lead to perforation of the peptic tract, and patients may experience serious symptoms such as abdominal pain and slab abdomen. Severe gastric ulcer may also be combined with pyloric obstruction, cancer and other complications, and patients should insist on receiving professional treatment so that their condition can be better recovered.