Blood clots are mainly treated with antithrombotic therapy, which may include aspirin and other drugs, but the treatment should be chosen differently according to the specific situation. For newly formed thrombus, intravenous injection of thrombolytic drugs, or the application of catheters to inject thrombolytic drugs into the local, commonly used thrombolytic drugs are urokinase, streptokinase and so on. For venous thrombosis, oral argatroban, warfarin, rivaroxaban, etc. can be chosen, and anticoagulants such as normal heparin and low molecular weight heparin can be injected intravenously at the same time. For arterial thrombosis, continuous antiplatelet therapy is needed, and the available drugs include clopidogrel and aspirin. When thrombosis occurs, one should consult a doctor in time and choose the appropriate treatment under the guidance of a professional doctor according to the location and duration of the thrombosis.