Abstract:To study the effect of ascites concentration combined with antibiotics on biochemical indexes and therapeutic effect in patients with cirrhosis ascites infection. Methods Fifty-eight patients with cirrhosis ascites infection treated from May 2012 to December 2014 were randomly divided into experimental group and control group with 29 cases in each group. The patients in the experimental group received ascites concentration combined with antibiotic treatment, those in the control group received antibiotic treatment. Then clinical situation, liver and kidney functions, renin-angiotensin-aldosterone system (RAAS), inflammatory reaction and therapy effect were compared between the two groups. Results The effective rate in the experimental group (96.55%) was significantly higher than that in the control group (75.86%,p < 0.05). The time of disappearance of clinical symptoms (diarrhea, abdominal pain, fever, etc) in the experimental group was significantly shorter than that in the control group (p < 0.05). The serum levels of TBIL, ALT, AST, BUN and Scr in the experimental group were significantly lower than those in the control group (p < 0.05). The serum content of renin, aldosterone and angiotensin Ⅱin the experimental group was significantly lower than that in the control group (p <0.05). The serum levels of TNF-α, IL-6, IL-8 and PCT in the experimental group were significantly lower than those in the control group (p < 0.05). The incidences of hepatic encephalopathy, hepatorenal syndrome, gastrointestinal bleeding and electrolyte disorder in the experimental group were significantly lower than those in the control group (p < 0.05). Conclusions Ascites concentration combined with antibiotics helps to improve the clinical symptoms, reduce the damage to liver and kidney functions, inhibit RAAS activation, alleviate the degree of inflammatory reaction, prevent complications, and then improve therapeutic effect.