Abstract： Objective： To systematically evaluate the effect of Baduanjin on the rehabilitation of postoperative cancer patients by means of Meta-analysis. Methods： Randomized controlled trials（RCTs） regarding Baduanjin intervention for postoperative cancer patients published from the establishment of the databases to November 2024 were retrieved from CNKI，Wanfang，VIP，SinoMed，PubMed，The Cochrane Library and Embase. The basic data of the included literature was extracted， and its quality was evaluated using the Risk of Bias Assessment Tool（RoB 2） recommended by the Cochrane Collaboration. The outcome indicators were graded according to the Grading of Recommendations Assessment，Development and Evaluation（GRADE）system，and Meta-analysis was performed using Stata 14.0 software. Results： A total of 19 RCTs involving 1 514 patients were included. The results of Meta-analysis showed that Baduanjin intervention significantly reduced the scores of fatigue [SMD=-1.15，95%CI（-1.68，-0.62）]， anxiety [SMD=-1.46，95%CI（-1.87，-1.04）] and depression [SMD=-1.15，95%CI（-1.52，-0.78）] in postoperative cancer patients， and significantly improved the physiological function [WMD=6.55，95%CI（2.21，10.88）]， social function [WMD=8.95， 95%CI（3.99，13.90）]， role-physical [WMD=13.97，95%CI（8.77，19.17）]， mental health [WMD=10.14，95%CI（7.18，13.09）]，role-emotional [WMD=11.13，95%CI（3.86，18.39）]，bodily pain [WMD=7.95， 95%CI（1.92，13.98）]， vitality [WMD=10.00，95%CI（7.14，12.85）] and general health [WMD=8.47，95%CI（3.48， 13.47）] of patients' quality of life. Subgroup analysis showed that intervention course was one of the important factors leading to heterogeneity. The GRADE grading of each outcome indicator included moderate and low levels. Conclusion： Baduanjin intervention can significantly improve the physical and mental health of postoperative cancer patients and enhance their overall rehabilitation effect.