The invention provides a method for automatically discovering and sequencing an outdated webpage based on Web time inconsistency. On the basis of time living of a webpage, The method comprises the following steps: establishing a multi-dimensional time vector of a webpage; extracting a multi-dimensional time value of the webpage; establishing a Web time inconsistency model; providing a novel method for reasoning and measuring the Web time inconsistency; constructing a principle framework for solving the Web time inconsistency; and applying the principle framework to (1) the automatic discovering and sequencing of the webpage when the website is outdated so as to release website maintainers from heavy manpower inspection and contribute to saving human resources, (2) quality arrangement of similar websites on the basis of time inconsistency measurement, such as sequencing of a government or university website in quality of information freshness, and (3) time sensitive information arrangement method for a search engine to ensure that a user can search latest information more convenient and improve the content quality and user evaluation of the website.