<正> Objective:To determine the effect of hyperbaric oxygenation(HBO) on treating acute cerebral in-farction(ACI). Methods: We randomly divided 60 patients with acute cerebral infarction into the treatment groupand the control group. Hyperbaric oxygenation treatment was applied in the treatment group as routine drug therapywas used. The neurological function, living ability, clinical therapeutic effectiveness and hemorrheology changes of pa-