2 diluted with normal saline 50 mL, once weekly. Patients in the treatment group were received intraperitoneal perfusion with Bevacizumab Injection, 5 mg/kg diluted with normal saline 50 mL, once weekly. The patients in two groups were treated for 2 weeks, 3 times at most. After treatment, the efficacy was evaluated, and levels of VEGF and CEA in ascites were determined before treatment and treated for 3 d. Scores of life quality in two groups were compared, and adverse reactions between two groups were studied. Results After treatment, the clinical efficacies in the control and treatment groups were 50.0% and 79.2%, respectively, and there was difference between two groups (P < 0.05). After treatment, levels of VEGF and CEA in two groups were significantly decreased, and the difference was statistically significant in the same group (P < 0.05). After treatment, the levels of VEGF in the treatment group were significantly lower than those in the control group, with significant difference between two groups (P < 0.05). After treatment, abdominal distension score and anorexia score in two groups were significantly decreased, and the difference was statistically significant between group (P < 0.05). No grade III - IV toxicities were found in two groups. Conclusion Bevacizumab Injection has better efficacy than Lobaplatin for injection in treatment of malignant ascites, and has good tolerance, which has a certain clinical application value."/>