Thrombophilia refers to the body’s tendency to form blood clots, clinically known as thrombophilia, which is generally categorized into hereditary and acquired. 1. Hereditary thrombophilia: due to hereditary gene defects, the body’s coagulation system and fibrinolytic system is defective, which is specifically manifested in the reduction of anticoagulant factors such as plasma protein S, antithrombin-III, and so on. 2. Acquired thrombophilia: the body is in a state of hypercoagulability due to various diseases, which leads to a higher risk of thrombus formation in the body. Common diseases that lead to hypercoagulability in the body include malignant tumors, systemic lupus erythematosus, and so on. It should be noted that patients with thrombophilia need to take long-term anticoagulant drugs under the guidance of a doctor to avoid the formation of blood clots, and need regular monitoring.