Objective To explore the impact of brain-computer interface (BCI) technology combined with music intervention on postoperative pain in patients with Elbow Joint Stiffness.Methods A convenient sampling method was used to select 105 patients undergoing open elbow joint release surgery for elbow joint stiffness, who were divided into a control group, intervention group 1, and intervention group 2, each with 35 cases, according to different hospital departments.The control group received routine postoperative pain management, intervention group 1 received general music intervention, and intervention group 2 was subjected to BCI technology combined with music intervention based on the control group.The pain management quality and the completion of early rehabilitation exercises were compared among the three groups postoperatively.Results After the intervention, there were statistically significant differences in static pain scores, dynamic pain scores, and the completion rate of early rehabilitation exercises among the three groups (all P＜0.05); and the scores of intervention group 2 were significantly better than the other two groups (all P＜0.05).Conclusion The combination of BCI technology and music intervention can effectively reduce postoperative pain levels, promote early rehabilitation exercises, and improve pain management quality.