Abstract: The standard of Hygienic Requirements for Chlorine Dioxide Disinfectant (GB/T 26366-2021) specifies the raw material requirements, technical requirements, field of application, usages, detection method, transportation, storage and packaging, and labelled as well as instructions for chlorine dioxide disinfectant. In order to cooperate with the publicity and implementation of this standard, and help users comprehensively understand and use the standard, this article gives an interpretation of the contents of this standard.