Objective To investigate the influence of perfusate temperature in arthroscopic shoulder surgery on postoperative swelling, pain and joint function recovery in the patients. Methods A total of 165 patients who underwent elective arthroscopic shoulder surgery in Wuhan First Hospital from January 2020 to January 2022 were randomly divided into observation group (83 patients treated with 37℃ of perfusate) and control group (82 patients treated with 22℃～24℃ of perfusate). Postoperative swelling and pain, the ASES scores, and the UCLA scores were compared between the groups. Results The difference values of arm circumference and shoulder circumference in the observation group immediately after operation and 24h after operation were lower than those in the control group(P＜0.05)There were statistically significant differences in VAS scores in terms of inter-group effect, time effect and interaction effect (P＜0.05) There was no significant difference in VAS score between the two groups immediately after operation (P＞0.05) The VAS scores at 12 h, 24 h, 48 h and 72 h after operation were lower than those immediately after anesthesia turning negative, but the decrease in the observation group was more significant(P＜0.05) There were statistically significant differences in ASES scores and UCLA scores in terms of inter-group effect, time effect and interaction effect(P＜0.05) There was no statistically significant difference in ASES score or UCLA score between the two groups before operation (P＞0.05) The ASES scores and UCLA scores at 3 months and 6 months after operation were higher than those before operation, but the increase in the observation group was more significant (P＜0.05) Conclusion Using perfusate with a constant temperature of 37℃ in arthroscopic shoulder surgery can reduce postoperative joint swelling and pain, and promote postoperative shoulder function recovery