It is more dangerous to cause blood clots after breast cancer surgery. Due to intraoperative trauma, the blood of breast cancer patients will be in a state of high coagulation, and in addition, lying in bed after surgery will further affect the circulation of blood, which will lead to thrombosis, and the patients will suffer from lower limb pain, swelling and discomfort, and so on. If the thrombus is dislodged, resulting in pulmonary embolism, cerebral embolism, etc., the corresponding symptoms will occur, and even life-threatening. After thrombosis, patients are usually required to stay in bed absolutely and reduce activities to avoid dislodging thrombus. At the same time, it is necessary to apply medication, such as low molecular heparin, under the guidance of specialized physicians. It is recommended that patients with blood clots after breast cancer surgery receive standardized treatment under the guidance of doctors to avoid affecting their condition.