If the thrombus is fresh, it can be eliminated; if it is old, it is more difficult to eliminate. 1. Fresh wall thrombus: after the formation of fresh wall thrombus, it will be close to the blood vessel wall, and once the thrombus is dislodged, it will cause serious consequences. After the discovery of thrombus, you can use drugs such as low molecular heparin and rivaroxaban for anticoagulation under the guidance of professional doctors, and if the effect of the drugs is not good, you can use the artificial filter to eliminate the thrombus. 2. Obsolete wall thrombus: when wall thrombus becomes obsolete, it will firmly stick to the vessel wall, and part of the thrombus can be calcified, so the risk of dislodgement is extremely low. If there are no symptoms such as swelling and poor reflux, there is no need to deal with it; if there are symptoms, the thrombus can be eliminated through interventional therapy, but it is more difficult to do so. Attachment thrombosis is relatively common in clinical practice, once it occurs, it should be timely to the hospital, under the guidance of professional doctors.