Generally, abdominal aortic aneurysm is dangerous when the tumor size is greater than or equal to 4CM. The diameter of abdominal aortic vessels in healthy people is about 1.5CM-1.8CM, and it is generally called abdominal aortic aneurysm when it is more than double this value, and it is more dangerous when the tumor continues to grow and exceeds 4CM. At this time, the abdominal aortic aneurysm may rupture at any time, and will affect the surrounding tissues and functions, which will threaten the patient’s life. Therefore, it is more dangerous at this time, and it is recommended that the patient should cooperate with the doctor to carry out surgical treatment at a later date. In daily life, patients should pay attention to bed rest as much as possible, avoid strenuous activities and strictly control the blood pressure to minimize the chance of rupture of the aneurysm. It is recommended that patients suffering from abdominal aortic aneurysm should consult a doctor for timely examination, and carry out appropriate treatment under the guidance of the doctor.