Thrombosis is caused by the abnormal coagulation of blood in blood vessels, which leads to the formation of blood clots in blood vessels, which can cause interruption of blood flow, and can lead to ischemia and necrosis of organs in serious cases, or bruising in organs caused by venous thrombosis. Therefore, once a thrombus is formed clinically, it needs to be actively treated. The details of whether a thrombus can be eliminated are as follows: 1. can be eliminated: Generally speaking, if the thrombus is in the acute stage, that is, within two weeks of the formation of the thrombus, part of the thrombus can be eliminated through some interventional means or active anticoagulation, thrombolysis, etc. 2. cannot be completely eliminated: subacute thrombus, that is, within two weeks to two months The possibility of complete elimination of thrombus is relatively low, but after active treatment by doctors, it may be partially eliminated and the blood vessel may be partially recanalized. In the case of chronic thrombosis, that is, thrombosis of more than three months, the possibility of complete elimination is not high, and the establishment of collateral circulation is needed to improve the symptoms, but with active treatment, it usually does not cause serious consequences. In clinical practice, if a patient with thrombosis is encountered, the appropriate treatment should be chosen according to the patient’s own condition.