OBJECTIVE： To investigate the effects of alanyl-glutamine dipeptide-intensified early enteral nutrition （EN） support on nutritional indexes， immune indexes， renal indexes and complications of sepsis patients. METHODS： A total of 112 cases of sepsis admitted into our hospital during May 2013-Jan. 2015 were selected and divided into observation group and control group according to random number table， with 56 cases in each group. Both groups received routine antibiotic therapy and early EN support （48 h） with nitrogen supplement 0.2 g/kg， calories 25 kcal/kg and nonprotein calories 19-21 kcal/kg each day. Observation group was additionally given Alanyl-glutamine for injection 0.5 g/kg with 0.9％ sodium chloride injection 100 mL， continuous pump within 24 h， for 4 d.  The levels of nutritional indexes （ALB， PAB， Hb）， immune indexes （CRP， IgG， IgA and IgM）， APACHEⅡ scores， SOFA scores， liver and renal function indexes （the levels of ALT， AST， Cr and BUN） were compared between 2 groups before and after treatment. The prognosis and the occurrence of complication were also observed in 2 groups. RESULTS： Before treatment， there was no statistical significance in the levels of ALB， PAB， Hb， CRP， IgG， IgA， IgM， ALT， AST， Cr， BUN and APACHEⅡ scores， SOFA scores between 2 groups （P＞0.05）. After treatment， the levels of ALB and PAB in observation group were increased significantly compared to before treatment， and the observation groups was significantly higher than control group， with statistical significance （P＜0.05）. APACHEⅡ score and SOFA score of 2 groups were decreased significantly compared to before treatment， and the observation group was significantly lower than the control group， with statistical significance （P＜0.05）. CRP of 2 groups were decreased significantly while IgG were increased significantly； the observation group was significantly better than the control group， with statistical significance （P＜0.05）. Cr and BUN levels of 2 groups were decreased significantly compared to before treatment， and the level of Cr in observation group was significantly control group， with statistical significance （P＜0.05）. The time of ICU stay， ventilator supporting time and antibiotics application time in observation group were significantly shorter than control group， and the incidence of diarrhea and gastric retention were significantly lower than control group， with statistical significance （P＜0.05）. CONCLUSIONS： Alanyl-glutamine dipeptide-intensified early EN support can significantly improve immune function and liver and renal function of sepsis patients and reduce the occurrence of complications.