Objective To investigate the effects of mindfulness behavior training on emotional disorder and immunological function in elderly patients after hip fracture fixation surgery.Methods Sixty elderly patients with fixed hip fracture by operation were randomly divided into a training group and a control group with 30 cases in each group.The training group received mindfulness behavior training in addition to routine rehabilitation training,while the control group only received routine rehabilitation training.The mindfulness behavior training was administered 90 min for once a week,lasting for 5 weeks.The emotional disorder was assessed with the profile of mood states (POMS),and the immune system function were evaluated by the number of CD3 + 、CD4 + 、CD8 + in T cell subgroup before and after 5 weeks of training.Results Before training,there was no significant difference in scores of POMS and the cells number of CD3 +,CD4 +,CD8 + (P ＞ 0.05) between the two groups.After treatment,scores of POMS including tension-anxiety (13.14 ± 3.36 vs 15.90 ± 4.28),depression-dejection (18.10 ± 6.24 vs 20.06 ± 5.42),fatigue-inertia (16.53 ± 3.50 vs 18.98 ± 4.88),vgor-activity (26.68 ± 5.22 vs 22.43 ± 5.20) (P ＜ 0.05),the level of mindfulness practice(58.00 ± 4.78 vs 54.00 ± 4.89) and the cells number of CD3 +,CD4 +,CD8 + (75.75 ± 5.40vs 69.91 ± 4.42 ;39.54 ± 3.29 vs 34.44 ± 4.21 ; 39.82 ± 3.55 vs 36.82 ± 3.55) in experimental group improved more than those in control group (P ＜ 0.05).Conclusion Mindfulness behavior training can improve the patients' mood state and have positive promotion on immunological function.