Method for auto constructing classified catalogue and relevant system

The invention provides a method for automatically building a classified catalogue. The method comprises: searching the concept terms related to a searched word submitted by a user from the available data to achieve a concept term set related to the searched word; calculating the relevancy among the concept terms in the concept term set; according to the relevancy among the concept term, performing the classifying and clustering operations for the concept terms in the concept term set so as to achieve at least one concept term category; organizing the concept term in the concept term set according to the concept term categories to be a classified catalogue, and returning to the user. On the basis of the exiting search engine, the method can generate a classified catalogue corresponding to a searched word provided by a user, and the classified catalogue can reflect different meanings of the word searched by the user. Therefore, the method is conducive to finding the needed information more easily and rapidly.