The main points of care for lower limb deep vein thrombosis are as follows: 1. Behavioral care, talk with patients, keep patients in good spirits and increase their self-confidence; 2. Give patients a quiet and comfortable environment, maintain appropriate humidity and temperature to facilitate venous reflux; 3. Diet, if the condition allows you to eat low-fat, high-fiber, easily digestible food, keep the bowels unobstructed, avoid affecting the lower limb venous reflux due to increased abdominal pressure; 4. Avoid puncture of the affected limb; 5. Care of the affected limb, closely observe the change of skin color of the limb; 6. When the patient suddenly develops dyspnea, chest pain and cough, he must be alert to the possibility of pulmonary embolism, and immediately report to the doctor in charge and give supportive care; 8. During the thrombolytic treatment, he must strictly observe the platelet count and coagulation status, and observe whether there is bleeding or oozing blood in the surgical area, or whether there is black stool, coffee-like or bloody vomit; 9.