Objective To explore the key points of observing and nursing for patients with acute aortic dissection during the different stages postoperatively.Methods The nursing methods by stages were performed on 25 patients with acute aortic dissection.The stages included early stage(1 to 2 days after the operation), intermediate stage(3 to 14 days after the operation) and advanced stage(14 days after the operation and later).The key points of each stage were different.In the early stage,it needs to closely observe the circulation,the amount of blooding,the respiration system,the nerve system,and the occurrence of complications;and it also needs to do the syndrome-based nursing well,including calming,dropping blood pressure,blood transfusion,suction of phlegm and et al.In the intermediate stage,it needs to guide the daily life of the patients,including taking diet and drinking,activities,excretion and et al．In the advanced stage,it needs to do directions of discharging from the hospital and to prevent the recrudescence of aortic dissection. Results A total of 25 patients were improved in term of their symptoms or cured by our nursing care.The diagnosis was timely and the operation Was suitable.The observation and nursing by stages after the operation were reasonable.All the patients were discharged from the hospital after being healed,no death and no occurrence of serious complications.Conclusions It is helpful to improve the restoration of patients with acute aortic dissection by observing and nursing care by stages,which will play an important role in promoting the smooth healing of the patients and preventing the accidents and the reoccurrence of aortic dissection.