To compare the effects on peritonitis cure and relapsing rates between oral moxifloxacin plus IP vancomycin and conventional IP vancomycin plus ceftazidime, eligible PD patients were randomly assigned to study group (IP vancomycin 1g every 5 days combined with oral moxifloxacin 400mg QD) and control group (IP vancomycin 1g every 5 days combined with IP ceftazidime 1g QD). Patients were followed for 3 months after the completion of the treatment period. Primary endpoint is complete cure, secondary endpoint are primary response and primary or secondary treatment failure.