The common postoperative complication is deep vein thrombosis, due to blood concentration after surgery, increased blood viscosity, slow blood flow after bed rest, coupled with the patient may have high blood lipids, atherosclerosis, easy to appear platelet aggregation. The vein thrombolysis, commonly used urokinase, blood sparing, blood plug, and improve the microcirculation of drugs, prostaglandin, can also assist the Chinese medicine. Danshen polyphenolate and Chuanxiongzin are used for thrombolytic therapy.