Objective To study the effects of hypothermia therapy on inflammation level and safety of patients with severe nervous injury.Methods A total of 82 patients with severe nerve injury were divided into study group and control group by random digits table, 41 patients in each group.The patients in these two groups had no statistical dis-parities in inflammatory agent and intracranial pressure (p>0.05).The patients in the control group were treated by routine therapy and those in the study group were treated by cephalic hypothermia therapy additionally.The two groups were compared in terms of the level of TNFα, IL-6 and IL-8 in the cerebrospinal fluid, prognosis and safety.Re-sults Before treatment there was no significant difference in inflammation level between the two groups (p>0.05). After treatment, the TNFα, IL-6 and IL-8 levels in the study group were significantly lower than those in control group (p<0.01).Before treatment there was no significant difference in ICP between two groups (p>0.05).How-ever, after treatment there was a significant difference in ICP between the two groups in all time points (p<0.01). The GOS score in the study group was significantly lower than that in the control group.There was no statistical dis-parities in complications between the two groups (p>0.0).Conclusion The hypothermia therapy has a great clini-cal efficacy and safety on severe never injury patients, which makes it worth clinical application.