This article describes the circumstances Involved in the standardization of the evaluation methods for antimicrobial products. The quantitative method of JIS L1902 was adopted as the test method for textile products. For plastic, metal and ceramic products, examination of test methods proceeded through the investigation of references and reference to test methods used by various industrial organizations, and a new test method was developed based on the film covering method. An evaluation standard for antimicrobial efficacy was also set up for these test methods and was established as a JIS standard (JIS Z 2801:2000).