Abstract: The recommended national standard Evaluation Method for Stability of Disinfectant (GB/T 38499-2020) specifies the basic requirements, test classification, and detection/evaluation requirements and methods for evaluating the storage stability of disinfectants. In order to promote the application and implementation of the standard, this article gives an interpretation of the standard from the aspects of the significance of implementation, development background, drafting process, and rationale of major technical specifications.