[Objective] To compare the clinical results of posterior triangle location technique versus conventional anteroposterior loca- tion method in arthroscopic posterior cruciate ligament (PCL) reconstruction. [Methods] A retrospective study was conducted on 60 pa- tients who received arthroscopic PCL reconstruction in our hospital. Among them, 32 patients were treated with posterior triangulation tech- nique (the posterior group) , and 28 patients were treated with conventional anteroposterior technique (the conventional group). The periop- erative, follow-up and imaging data of the two groups were compared. [Results] All the patients had PCL reconstruction performed success- fully without complications such as vascular and nerve injury. The posterior group proved significantly superior to the conventional group in terms of operation time, intraoperative fluoroscopy times (P＜0.05) . All the patients were followed up for (20.4±4.7) months, and the posteri- or group resumed full weight- bearing activity significantly earlier than the conventional group (P＜0.05) . The VAS, Lysholm and IKDC scores significantly improved in both groups at the last follow-up compared with those before surgery (P＜0.05) . Although there was no sig- nificant difference in VAS scores between 2 groups (P＞0.05) , the posterior group proved significantly superior to the conventional group in terms of Lysholm and IKDC scores at the latest follow up (P＜0.05) . Radiographically, there was no significant difference in tibial tunnel lo- cation (P＞0.05) . The posterior translation at 30° and 90° of knee flexion under stress on imaging was significantly reduced at the latest fol- low-up in both groups compared with those before operation (P＜0.05) , which were not statistically significant between the two groups at any matching time points (P＞0.05) . [Conclusion] The posterior triangle technique for tibial tunnel location in arthroscopic PCL reconstruc- tion has advantages of improving exposure of the surgical field, reducing the iatrogenic injury, saving the operation time, and preserving the residual posterior cruciate ligament and the meniscofemoral ligament, which is conducive to the functional recovery of the knee joint.