Abstract
Recently, CVM (Contingent Valuation Method) is widely applied to evaluate non-market goods. But there are still many researchers who have taken a critical stance of the measurement and methodology. So we consider their criticism and examine the reliability of the measurement of non-market goods by CVM, theoretically. And we propose Delphi Technique-CVM, applying the result to CVM. In addition, we implement the CVM questionnaire practically, and examine how reliable Delphi Technique-CVM and CVM are.