[Abstract] Objective:To explore the clinical value of arthroscopy-assisted positioning of the femoral tunnel in the reconstruction of the medial patellofemoral ligament (MPFL). Methods: Fifty-seven patients with recurrent patella dislocation were divided into control group (using intraoperative touch of femoral epicondyle positioning, 27 cases) and observation group (using arthroscopy-assisted positioning, 30 cases) according to different positioning methods of femoral tunnel during reconstruction of MPFL. example). The general indicators of perioperative period, postoperative Lysholm score, AKS (The American knee society) score and femoral tunnel distance were compared between the two groups of patients. Results: The patients in both groups were followed up for 12-18 months (14.13 ± 2.04) months. The operation time and surgical incision in the observation group were significantly shorter than those in the control group (P <0.05); the incidence of complications (0%) in the observation group was significantly lower than that in the control group (11.1%), with a significant difference (P <0.05); Lysholm in the two groups of patients The scores and AKS scores were increased compared with those before surgery, and the observation group was significantly higher than the control group (P <0.05). Three-dimensional CT reconstruction of the two groups of patients was used to determine the distance of the femoral tunnel. The distance between the equidistant points of the femoral tunnel in the control group was (7.32 ± 0.81) mm, and the observation group was (3.25 ± 0.91) mm. The difference between the two groups was significant (P <0.05). The patella angle was measured by the x-ray film of the patella of the two groups after operation. The patella angle of the control group was (10.3°±3.9°) and the patella angle of the observation group was (12.2°± 4.1°). The difference between the two groups was significant (P <0.05).Conclusion: Arthroscopy-assisted localized femoral tunnel reconstruction MPFL has the advantages of less surgical trauma, smaller incisions, faster postoperative recovery, better patient acceptance and satisfaction, and is worthy of further clinical promotion and use.