Objective To study the changes in the nutritional status and humoral immunity after early enteral-nutrition bundle treatment in patients with severe traumatic brain injury. Methods 42 patients with severe traumatic brain injury were randomly divided into two groups,i.e. delayed common nutrition group (PT- group,21 cases),and early bundle nutrition group(JS-group,21 cases). All cases were tested at day1, day 7,day 14 of nutrition treatment, for detecting the nutrition related index, humoral immune index and ICU monitoring time, T-test was used for datastatistical analysis. Results ①Compared with PT-group, the serum albumin,prealbumin and hemoglobin in JS-group were significantly higher(P＜0.05), also had significant increase compared with before treatment in JS-group (P＜0.05). ②The serum levels of IgG, IgM, IgA and total lymphocyte count(TLC) were significantly higher in JS-group than those in PT-group(P<0.05), and significantly improved compared with before treatment in JS-group(P＜0.05). ③The ICU monitoring time of patients in JS-group was one-day less than that in PT-group, but there was no statistical significant difference between them(P＞0.05). Conclusion There had malnutrition and immune function decline in the patients with severe traumatic brain injury, in whom early enteral-nutrition bundle treatment can improve nutritional status and enhance the humoral immune function.