Objective To evaluate the clinical results of open reduction and internal fixation combining bone graft in the treatment of humerus surgical neck fracture(NeerⅡ,Ⅲ).Methods Twenty-one cases of humerus surgical neck fractures(Neer Ⅱ: 5 cases;Neer Ⅲ: 16 cases) were treated by locking proximal humerus plate combining bone grafting.Results All patients were followed for more than 6 months on average,all of the fractures were healed and got satisfactory results of shoulder functional recovery.The results were excellent and good in 18 cases,the good rate was 85.7%.Conclusion Locking proximal humerus plate fracture fragments combining bone graft is conductive to the fracture healing and shoulder functional recovery.It is an effective method in the treatment of humerus surgical neck fracture(Near Ⅱ,Ⅲ).