Abstract[Background]This meta-analysis aims to evaluate the efficacy of hip arthroscopy versus open surgical dislocation for treating femoroacetabular impingement (FAI) through published clinical trials. [Methods] A literature search was performed using CNKI,CBM,Wangfang,VIP ,PUBMED, EMBASE, web of science and the Cochrane Library to collect the clinical trials which compared the clinical efficacy of hip arthroscopy and open surgical dislocation for femoroacetabular impingement and were published from January 1980 to April 30, 2021．After literature screening, quality evaluation, deviation risk assessment and the determination of relevant clinical outcome indicators were conducted by two researchers independently, a meta-analysis was performed by using Revman5.3 software.[Results] A total of 8 RCT were enrolled with a total of 862 patients, including 427 patients in the hip arthroscopy group and 435 patients in the open surgical dislocation group.As results of the meta-analysis, the hip arthroscopy proved significantly superior to the open surgical dislocation regarding postoperative complications, NAHS score at 3 months after treatment HOS-ADL score at 3 months after treatment（P<0.05）.However,this meta-analysis demonstrated no significant differences in the NAHS score 12 months after treatment , HOS-ADL score 12 months after treatment , MHHS score , HOS-SSS score, HNI and changed Alpha Angle (P>0.05) [Conclusions] Both arthroscopy and open surgery have achieved good clinical efficacy in the treatment of FAI, however, arthroscopic treatment was associated with a lower incidence of complications, and high NAHS and HOS-ADL scores at the beginning of treatment. Compared with open operation group, NAHS and HOS-ADL scores increased significantly.