Symptoms of ruptured abdominal aortic aneurysm include abdominal pain, back pain, low blood pressure, hemorrhage, vomiting blood, and blood in the stool. When an abdominal aortic aneurysm ruptures, the patient will experience severe abdominal pain, back pain, and soon develop severe hypotension due to intra-abdominal hemorrhage. After rupture, retroperitoneal hematoma will be formed first, and the patient will have ecchymosis on both sides of the abdominal wall, and the ecchymosis will further spread to the perineum. If the rupture breaks into the abdominal cavity, the patient will have hemorrhage, which will quickly lead to hemorrhagic shock, and the untimely treatment will be life-threatening. Sometimes the rupture of abdominal aortic aneurysm may also break into the peripheral intestinal tube, forming aorto-duodenal fistula, which may cause hemorrhage in the digestive tract of the patient, causing the patient to vomit blood and have blood in the stool. Patients with abdominal aortic aneurysm may be induced to rupture the abdominal aortic aneurysm due to elevated blood pressure, increased abdominal pressure (e.g., forceful coughing, forceful defecation), and heavy physical activities. Patients should have regular checkups in their daily life, develop good living habits, avoid strenuous exercise, and keep bowel movement smooth to reduce the risk of abdominal aortic aneurysm rupture. For abdominal aortic aneurysms with a diameter larger than 4 centimeters, timely surgery should be performed.