Abstract:[Objective] To investigate the clinical outcomes of hip arthroscopy for treatment of acetabular paralabral cyst. [Methods] From January 2016 to October 2018, a total of 16 patients underwent hip arthroscopy for acetabular paralabral cyst, and their clinical and imaging data were evaluated. [Results] During arthroscopy, all the 16 patients proved of acetabular paralabral cyst, and 14 cases of them had cam-type femoroacetabular impingement (FAI) found, accounting for 87.5%. All patients underwent cysts resection and labral suture, and those with FAI underwent cam osteophyte resection. The 16 patients had no serious complications, and were followed up for more than 24 months. The VAS scores were significantly decreased (P<0.05) , while mHHS and iHOT-12 scores significantly increased at 12 and 24 months postoperatively compared with those before surgery (P<0.05) . Radiographically, the α angle and lateral center edge angle (LCEA) significantly reduced (P<0.05) , while the femoral head neck offset (FHNO) significantly increased (P<0.05) , and there was no significant change in LCEA (P>0.05) postoperatively compared with those before operation. Up to the latest follow-up, nobody of them had recurrence of labral cysts and obvious hip degeneration found on images. [Conclusion] Hip arthroscopy is an effective method for the treatment of ace- tabular paralabral cyst, which does significantly improve the symptoms and function of the hip.