Objective To investigate the effect of etimicin combined with thymopeptide α1 on intestinal flora,circulatory function and renal function in patients with sepsis.Methods A total of 80 patients with sepsis treated in Wenzhou Central Hospital from March 2021 to June 2022 were selected and divided into control group and study group according to treatment methods,with 40 cases in each group.The control group was treated with thymopeptide α1 on the basis of conventional treatment,and the study group was treated with etimicin on the basis of control group treatment,and both groups were treated for 2 weeks.The intestinal flora,circulatory function,renal function,mechanical ventilation duration,hospital stay,acute physiology and chronic health evaluation Ⅱ(APACHE Ⅱ)scores and clinical efficacy of two groups were compared.Results After treatment,Bifidobacterium,central venous pressure(CVP),mean arterial pressure(MAP)and urine volume of patients in both groups were significantly higher than before treatment,Enterobacter,Enterococcus,Staphylococcus,Bacterioid,Obligate anaerobe,Pseudomonas,heart rate,serum creatinine and blood urea nitrogen were significantly lower than before treatment(P<0.05).Bifidobacterium,CVP and MAP of study group were significantly higher than those of control group,and Enterobacter,Enterococcus,Staphylococcus,Bacterioid,Obligate anaerobe,Pseudomonas,heart rate,and scores of APACHE Ⅱ were significantly lower than those of control group(P<0.05).The mechanical ventilation time and hospital stay in study group were significantly shorter than those in control group(P<0.05).The total effective rate of study group was significantly higher than that of control group(χ2=6.275,P=0.012).Conclusion Etimicin combined with thymopeptide α1 in the treatment of sepsis can effectively regulate the intestinal flora and circulatory function of patients,and has little effect on renal function,which is worthy of clinical promotion and application.