Abstract:[Objective] To explore the relationship between synovial cytokines, including ghrelin and interleukin-1β (IL-1β), and the prognosis of arthroscopic repair for rotator cuff tear (RCT) . [Methods] A total of 80 patients who underwent arthroscopic repair for RCT in the hospital were prospectively enrolled into this study from June 2019 to June 2020. Based on Neer score at 6 months postoperatively, the patients were divided into the good outcome group and poor outcome group. The preoperative factors impacted on the prognosis were searched by using univariate comparison and binary multivariate logistic regression. In addition, ROC analysis was performed on the preop- erative synovia cytokines and the outcomes. [Results] At the latest follow-up, 58 patients were divided into the good group, while the re- maining 22 patients fall in the poor group. The good group had significantly higher preoperative synovial ghrelin, while significantly lower synovial IL-1β than the poor group (P<0.05) . The Neer scores at the latest follow-up in 80 patients was significantly positively correlated with preoperative synovial fluid ghrelin (P<0.05) , whereas significantly negatively correlated with preoperative synovial fluid IL- 1β (P< 0.05) . As results of the binary multivariate logistic regression analysis, preoperative high expression of synovial ghrelin was a protective fac- tor for poor clinical outcome (OR=0.276, P<0.05) , whereas the high expression of IL-1β was a risk factor for poor clinical outcome (OR= 1.142, P<0.05) . In addition, the ROC analysis showed that preoperative synovial ghrelin, IL-1β detected individually and the combination had significant value of predicting poor clinical outcome. [Conclusion] The preoperative synovial cytokines might be meaningful indicators for judging the prognosis of RCT arthroscopic treatment.