Abstract: This article reviews the development process of European Union (EU) drinking water Directives, analyzes the main content changes in the new Directive (EU) 2020/2184, including changes in water quality indicators and limits, comprehensive introduction of the Water Safety Plan based on risk assessment, reinforcement of information disclosure and unified requirements of EU on water-related materials, and puts forward suggestions for the formulation and revision of standards for drinking water quality in China according to the development and changes of the new version of the directive.