Objective: To evaluate the effect of retrieval of broken wire in femoral neck with bone endoscopy. Method: Between March 2011 and Mar 2020,7 patients with broken wire in femoral neck were treated.2 cases were male and 5 cases were female.The average age was 48.3±6.0 years[range 32 to 67 years].There were 1 case at left side and 6 cases at right side.About location of broken wire,there were 1 case in femoral neck ,5 cases in femoral head and 1 case protruding into the hip joint.There were 6 frash and 1 old broken wire.According to broken reason,1 case was due to material,3 cases was due to drill cutting,2 cases was due to screw cutting,and 1 case was due to penetrating into hip joint. All patients were treated by bone endoscopy,and 6 cases continue to internal fixation and 1 case continue to bone grafting with allograft. Operation time,blood loss,additional bone loss,mass of bone graft,distance between distal tunnel and articular surface. Result:All patients underwent successful operation. The average operation time was 23.30±3.90 min(range 17 to 40 min),and the average blood loss was 16.20±4.40 ml(range 20 to 30 ml).The average additional bone loss was 0.35±0.06 cm3(range 0 to 7 cm3),and the average mass of bone graft was 3.10±0.50 g(range 2 to 6 g).The average distance between distal tunnel and articular surface was 1.80±1.00 cm(range 0.5 to 5.0 cm). Conclusion:Retrieval of broken wire in femoral neck with bone endoscopy is efficient and little injury.It do not need to additionally damage surrounding the tunnel,and can continue to internal fixation after broken wire removing.