(1) Isolation care: Place the patient in a special isolation ward to maintain a room temperature of 20-25℃ and a certain humidity and strict disinfection and isolation system. (2) Elevate the limbs. (3) Local warming. (4) Observe the blood circulation of the replanted finger with color, elasticity, skin temperature, capillary filling time, etc. (5) Application of peripheral vasodilator drugs commonly used Toltrazurin 25mg/6h poppyrine 30mg/6h etc. (6) Prevention of infection and routine tetanus antitoxin serum 1500u intramuscular injection. 2, systemic application of anticoagulant drugs: whether the application of systemic anticoagulant drugs after replantation of severed fingers is still debated foreign scholars still routinely apply that anticoagulant therapy helps reduce or prevent anastomotic thrombosis in fact fine vascular suture technique is most important at present generally apply low molecular dextran (500 ~ 1000ml/d) aspirin (0.5 ~ 1.0g/time 3 times/d) and some Only when the vascular injury is serious or the thrombus is removed by surgical exploration or vascular transplantation, anticoagulation therapy such as heparin should be applied carefully.