Objective  To evaluate the clinical efficacy and imaging results of reconstruction of the medial patellofemoral ligament with semitendinotendon and the medial patellotibial ligament with medial 1/3 of the patellar ligament in the treatment of recurrent patellar dislocation.Methods  This study retrospectively analyzed 25 patients diagnosed with recurrent patellar dislocation who were admitted from Jun.2013 to Jun.2018，including 6 males and 19 females.The age ranged from 15 to 38 and the average age was (22.36±5.20).Semitendinosus tendon was taken to reconstruct patellofemoral ligament under anesthesia，medial 1/3 of the patellar ligament connected with bone block from tibial tubercle was taken to reconstruct patellotibial ligament.CT-scan and X-ray examination were reexamined post-operation as imaging evaluation，and the patellar femoral adaptation Angle，patella inclination angle，patella migration degree，Caton index，TT-TG value (Tibia Tuberosiy-Trochlear Groove)were measured.Lyshlom score，Kujala score，J-sign and apprehensive test were used to evaluate Knee function.Results  All of the 25 participants were followed up for 12 to 48 months，with an average of (18.16±6.85)months.No recurrent dislocation was reported.The preoperative and postoperative Kujala score was (54.60±11.08) and (75.40±7.49) separately，the Lysholm score was (43.48±6.78) and (93.20±3.52) respectively，and the difference was statistically significant (P＜0.05).According to the imaging evaluation，the patellar femoral adaptation Angle was (13.74±5.09)° and (4.14±2.52)° in pre-operation and pos-topration，the patellar tilt Angle was (16.89±4.09)° and (3.40±1.37)° respectively，the offshoring of patellar degrees was (33.14±3.99) and (7.40±2.69) respectively，and the differences were statistically significant (P＜0.05).No statistically significant difference was found when TT-TG values and Caton index were compared before and after operation (P＞0.05).J-signs were negative and Apprehensive tests were negative for all the patients.Conclusion  The reconstruction of patellofemoral ligament with semitendinoid combined with reconstruction of patellotibial ligament with 1/3 of the patellar ligament connected with bone block from tibial tubercle in this study is technically safe for the treatment of recurrent patellar dislocation，and has achieved good clinical results both subjectively and objectively in the short-term follow-up.