Object: To evaluate the effect of capitation payment policy intervention for medical service utility of the insured o utpatients. Methods: To collect outpatients’ medical service utility data before and after the capitation payment policy intervention in NCMS in pudong new area from the year of 2011 to 2015 , and to a nalyze the intervention impacts on o utpatients’ medical service utility by comparison. Results: 80% outpatients’ medical service utility was happened in community health service centers (CHSCs) and 16% was happened in secondary hospitals. The institution of outpatients’ expense was roughly equally split between CHSCs and second & th ird degree hospital s. From the view of year-over-year growth , it resulted in a downward trend of outpatient cost per visit year by year after the intervention, and in the year of 2015 the mean outpatient cost per visit in second & th ird degree hospital s respectively were RMB 275.46 and RMB 208.24. Conclusion: The times and fees of insured outpatients were generally going up year by year, especially in second & th ird degree hospital s. There was a well impact of the policy intervention in cost control of outpatient cost per visit, and also there was a more obvious downward trend in second & th ird degree hospitals.