The purpose of this paper is to analyze the trends of policies and law related to web accessibility in developed countries such as U.S, U.K, Australia, Japan and EU and then propose polices to improve web accessibility in Korea. The results of the paper are as follows : First, the awareness promotion programs, i.e seminars, campaigns, contests, etc., should be provided. Second, Korean standards and guidelines which have specific information should be made to improve web accessibility, Third, Web accessibility specialist should be trained. Finally, Law and regulation related to web accessibility should be amended as the Section 508.