[Objective] To introduce the surgical technique and preliminary clinical results of prior- localization of femoral tunnel in medial patellofemoral ligament reconstruction in the treatment of recurrent patellar dislocation. [Methods] From January 2018 to June 2019, 36 patients with recurrent patella dislocation were prior- localization with femoral tunnel in MPFL reconstruction. Two steel balls were fixed near the medial adductor nodules of the knee joint and the medial edge of the patella before the lateral X-ray and CT scan examination of the knee joint. The midpoint of the medial femoral condyle and the adductor nodule was taken as the MPFL femoral insertion. By measuring the positional relationship between the two steel balls and the connection line and the MPFL femoral insertion, the MPFL prior- localization insertion was marked on the patient's skin. The arthroscopic approach was taken at the prior- localization insertion, and MPFL reconstruction was performed under arthroscopy. [Results] All patients were followed up. No patella re-dislocation was found. There was no significant difference in the Caton index of the knee joint postoperation compared with that preoperation (P> 0.05). The postoperative patella tilt angle, Lysholm and Kujala scores were significantly different from those preoperation (P <0.05). MRI showed that MPFL tendon-bone healing and tension were well one year after surgery. [Conclusion] By prior- localizating the MPFL femoral tunnel preoperation, arthroscopic reconstruction of MPFL in the treatment of recurrent patella dislocation has achieved reliable clinical efficacy, and it can avoid the ionizing radiation brought by C-arm fluoroscopy during surgery.