Abdominal aortic aneurysm may present with symptoms such as pulsatile mass, pain, compression, embolization and rupture. 1. Pulsatile mass: there is abnormal pulsation around the umbilicus or the heart socket, and a rounded pulsatile mass can be palpated at the umbilicus or above the umbilicus, and the frequency of pulsation is consistent with the pulse. 2. Pain: the pain is mostly in the abdomen and waist and back, which is distending or cutting pain. The tumor is very large, which will compress and erode the vertebral body, leading to radicular pain. 3. Compression: gastrointestinal compression is the most common, manifesting as epigastric distension and discomfort; compression of the renal pelvis and ureter will lead to urinary obstruction; compression of the inferior vena cava will lead to deep vein thrombosis in the lower limbs. 4. Rupture: abdominal aortic aneurysm is the most serious clinical problem, manifested by sudden severe abdominal pain, hemorrhagic shock, and cystic swelling in the abdomen. Physical examination found that there is an abdominal aortic aneurysm, you should promptly consult a doctor, under the guidance of observation, treatment. If the above symptoms occur, it is recommended to consult a doctor promptly and treat it actively.