The invention discloses a method for searching secret-related files in a computer system, comprising the following steps in sequence: analysis step: analyzing file content and format information according to types and versions of different computer files; searching and matching step: carrying out searching and matching on file content and format feature information according to 'set strategy combination' to generate the result for judging whether the file is secret-related; revealing step: carrying out interface revealing on file names and file repository paths of the files judged to be secret-related files. In the invention, joint searching and matching is carried out on file content and format feature which can be revealed on a type script according to secret-related document styles, completeness and accuracy of the search result are both taken into consideration, so that manual judgment can be reduced and searching hit ratio for secret-related files is improved. With the method, secret-related files in the computer system can be found in an efficient, complete and accurate manner, thus playing a very important role in reducing the risk of leaking secret-related information, improving management capacity for secret-related files, and strengthening information security protection.