Conservative treatment of lower limb deep vein thrombosis should pay attention to avoiding thrombus dislodgement, eating a light and digestible diet, and monitoring the condition of the body. 1. Avoid thrombus dislodgement: stay in bed absolutely, elevate the affected limb, pay attention to local warmth, avoid substantial activity of the affected limb, avoid massaging the affected limb to prevent thrombus dislodgement causing pulmonary embolism. 2. Diet light and easy to digest: eat more vegetables, fruits and other light and easy to digest food, supplement vitamins and minerals, avoid spicy and greasy stimulating food, keep the bowel movement smooth, avoid defecation caused by venous return of the lower limbs is restricted. 3. Monitor the body condition: pay attention to observe the affected limb skin temperature, color, circumference and other changes, at the same time, closely blood pressure, blood oxygen, heart rate and other basic vital signs, once there is dyspnea, chest pain, chest pain, chest constriction and other symptoms may suggest that the pulmonary embolism, need to be dealt with immediately. In addition, the patient’s coagulation function should be monitored regularly, and compression stockings should be used as much as possible after getting out of bed.