Abstract:[Objective] To investigate the skills and effect of treatment of SeinsheimerⅡ～Ⅳfemoral trochanteric fractures with limited incision and intramedullary nail fixation. [Methods] A analysis was performed on 34 cases of SeinsheimerⅡ～Ⅳfemoral subtrochanteric fractures treated from January 2018 to June 2020. The surgical time, intraoperative blood loss,intraoperative perspectives, fracture healing time, postoperative complications and Harris score were analyzed. [Results] All 34 patients were followed up. The follow-up time was (20.00 ± 3.16) months, the fracture healing timewas (14.17 ± 3.09) weeks, the operation time was (68.89 ± 15.29) minutes, and the intraoperative blood loss was(188.89 ± 91.64) ml. The number of intraoperative perspective was (20.78 ± 3.69) times. No post-operative complications were found,such as nonunion internal fixation failure, hip varus, infection, and vascular and nerve damage. Hip Harrisscore was excellent in 26 cases, good in 7 cases, fair in 1 cases, and the excellent and good rate was 97.06%.The last follow-up was significantly better than the 3-month follow-up，P<0.001.The quality of fracture reduction was evaluated by X-ray, and the excellent and good rate was 94.12%.[Conclusion] According to the characteristics of fracture displacement, a variety of reduction techniques are used to perform limited incision and reduction with minimally invasivetractor.Appropriatefemoral intramedullary nails are selected for SeinsheimerⅡ～Ⅳfemoral subtrochantericfractures.These proved to be an ideal surgical method. Key words: invasive retractor， limited incision， intramedullary nail， femoral subtrochanteric fracture