The purpose of this study was elucidating the characteristic of Koichi Nomura's music criticism and influence on audience (people who accept classical music). Koichi Nomura was a music critic in period of Taisho and Showa era. A part of his criticism appeared in Tokyo Nichinichi Shinbun and Mainichi Shinbun from 1926 to 1943 and those were completed in 20 years of music in criticism (Hihyo-kara-mitaongaku-nijunen ). Analyzing his musical review in this book, it was appeared that his music criticisms had following two characteristics: (1) a viewpoint of his music criticism was conformed with characteristics of musical instruments and playing style, (2) he criticized foreign performer who visited to Japan regarding as a paragon (ideal model) and Japanese performer regarding as a target of encouragement. Findings indicated that his music criticism had an effective on not only developing skills of Japanese performers but also refining large audience's sense of values.