[Objective]To systematically evaluate the clinical efficacy of Femoral Neck System in the treatment of femoral neck fractures.[METHODS] PubMed, CNKI, Cochranelibrary, Wanfang, VIP database, Embase, CBM and ChiCTR databases were searched to collect the literatures on FNS for the treatment of femoral neck fracture from January 2017 to December 2021. Quality assessment and data extraction were performed by two authors respectively. Meta-analysis was performed using RevMan 5.4 software after collating the data. [Results]A total of 700 patients with 9 retrospective cohort studies were included in this study. The analysis results that FNS was superior to Conventional instrumented cannulated screws in the treatment of femoral neck fractures in terms of operation time (P< 0.05),fluoroscopy times (P<0.05) , fracture healing time (P<0.05) , hip function after 6 months (P<0.05) and femoral neck shortening rate (P<0.05) , but FNS had more intraoperative blood loss (P < 0.05) than CS. There was no significant difference between FNS and CS in terms of femoral head necrosis rate (P>0.05) and incidence of nonunion (P>0.05) . [Conclusion]FNS treatment of femoral neck fracture is beneficial in reducing the operation time, fluoroscopy times , fracture healing time, femoral neck shortening rate, and improving the recovery of hip function after 6 months, with significant clinical effect, but slightly more intraoperative blood loss than CS.