Abdominal aortic aneurysm does not have five clear symptoms in the early stage, and the common symptoms are pulsatile mass, pain, compression, embolism and so on. 1. pulsatile mass: the patient can feel abnormal pulsation around the navel or precordial area, and feel the round pulsatile mass in or above the navel during the examination. 2. Pain: the pain is mainly in the abdomen and lower back, and the nature of the pain is mostly swelling or cutting pain. 3. Compression: the most common is the compression of the gastrointestinal tract, abdominal discomfort, dyspepsia, nausea, vomiting, reduced food intake, and so on. 4. Embolism: If the thrombus or plaque inside the abdominal aortic aneurysm is dislodged and goes to the periphery with the blood flow, it can cause embolism of the arteries of the lower limbs. If abdominal aortic aneurysm occurs, it is necessary to actively consult the doctor and follow the doctor’s instructions for reasonable treatment.