After surgery, the arteriovenous endovascular fistula and daily care precautions: 1, after surgery due to increased venous pressure, lymphatic flow is blocked, the hand and forearm can have varying degrees of swelling, the hand on the operated side should be properly elevated to promote venous return and reduce swelling; 2, daily check whether the vascular anastomosis is smooth, such as the venous side to feel the tremor, hear the vascular murmur, indicating that the fistula is smooth, otherwise, thrombosis should be suspected, need to contact with the doctor 3, anticoagulant use: the presence of hypercoagulable state or low blood pressure, and no postoperative bleeding, systemic anticoagulation can be given, such as oral enteric aspirin tablets, dilation therapy, but also subcutaneous injection of low-molecular heparin; 4, postoperative bleeding: light pressure to stop bleeding, compression, pay attention to maintain the presence of vascular tremor, ligation to stop bleeding; 5, functional examination: postoperative veins can be palpated tremor, hear vascular murmur. Early postoperative examination should be performed several times in order to detect thrombosis early and deal with it in time; 6. Avoid transfusion, blood transfusion and blood sampling for laboratory tests in the limb on the side of the internal fistula after surgery; 7. Prohibit blood pressure measurement on the surgical side, and prohibit wrapping tourniquet around the upper limb on the surgical side within 2 weeks after surgery; 8. 24 hours after surgery, the hand on the surgical side can make fist and wrist movement appropriately to promote blood circulation and prevent thrombosis. The first two weeks after surgery, you can use your hand to squeeze the rubber health ball and exercise 3 to 4 times a day for 10 min each time to promote vasodilation and early maturation; 9, appropriate elevation of the limb on the operated side of the fistula can reduce limb edema; 10, every 3 days to change the medicine once, 10 to 14 days to remove the stitches, pay attention to the dressing without pressure; 11, pay attention to body posture and cuff tightness to avoid pressure on the limb on the side of the fistula; 12, the internal fistula The AVF is best done 2 to 6 months before hemodialysis, generally 2 months AVF maturity, in emergency situations, 2 to 4 weeks can also be used; 13, AVF maturity, if the patient is critically ill and must be 14. Self-check the fistula anastomosis for tremor, at least twice a day, and come to the hospital if you find fistula pain and tremor disappears; 15. If you have a hemangioma, you can protect it with an elastic bandage to avoid touching it.