[Objective] To evaluate the clinical efficacy of posterior arthroscopic subtalar arthrodesis for the end- stage arthropathy. [Methods] A retrospective study was conducted on 31 patients who underwent posterior arthroscopic subtalar arthrodesis for severe subtalar arthritis in our hospitals from August 2016 to June 2019. The perioperative, follow-up and imaging data were summarized. [Results] All the patients had operation performed successfully without intraoperative complications, and followed up for (19.1±2.9) months on an average. The VAS scores of 31 patients significantly decreased (P＜0.05) , whereas the AOFAS scores significantly increased over time (P＜0.05) . In terms of imaging examination, 30 patients had normal hindfoot alignment, whereas the remaining one patient got mild varus (＜5°) , which did not impact the joint function. By the time of the latest follow-up, all the 31 patients got solid subtalar fusion with fusion rate of 100%. [Conclusion] This posterior arthroscopic subtalar arthrodesis is effective treatment for end-stage subtalar arthropathy with a high fusion rate.