Objective To investigate the effect of hyperbaric oxygen therapy on awareness,sports,activities of daily living in the rehabilitation of patients with early traumatic brain injury,and to observe the curative effect. Methods 80 patients with severe traumatic brain injury whose disease course within 1 months were randomly divided into observation group and control group,40 cases in each group.The control group received conventional drug therapy in neurosurgery and rehabilitation training.The observation group received hyperbaric oxygen therapy on the basis of the control group.Before treatment and one month after treatment,consciousness (GCS score),motor function (FMA score),activities of daily living (MBI score),and the clinical efficacy were compared between two groups.Results The scores of FMA,MBI and GCS in the control group were (7.81 ±2.27),(26.05 ±22.58),(15.25 ±12.14), which in the observation group were (7.78 ±2.32),(27.01 ±23.60),(14.37 ±12.54),and the differences were not significant (P >0.05).After 1 month of treatment,the scores of the control group were (9.44 ±2.76),(43.10 ± 31.54),(42.75 ±16.58),which of the observation group were (10.67 ±2.48),(56.98 ±29.68),(52.76 ± 17.23).The scores in the two groups were improved,the observation group increased more and the clinical efficacy was more obvious,there were significant differences between the two groups (P =0.039,0.046,0.009).Conclusion Hyperbaric oxygen plays an active role in early rehabilitation of patients with traumatic brain injury,it can improve consciousness,motor function and activities of daily living,and can improve the prognosis.