Whether a patient’s abdomen with thrombus is dangerous or not is generally analyzed objectively based on whether the thrombus is new and whether the thrombus is dislodged. First, if the abdominal thrombus is new, there is still more water in the thrombus, and the thrombus is easily dislodged. The thrombus enters the pulmonary artery, brain and heart along the blood flow, thus causing acute pulmonary infarction, acute myocardial infarction, acute cerebral infarction and other serious complications that can endanger life. Second, if the abdominal thrombus belongs to the old thrombus, the thrombus is not easy to fall off with the dense adhesion to the blood vessel wall, at this time can actively give subcutaneous injection of low molecular heparin, intravenous infusion of dextrose and other drugs to promote the gradual dissolution and absorption of the thrombus, the abdominal thrombus is relatively safe, generally will not cause serious complications that endanger life.