The invention discloses a rapid file checking method and system. The method comprises the following steps of: obtaining file formats frequently used by users in mass clients; analyzing and determininga corresponding relationship between each file format and a support file required for opening the file format; obtaining a rapid file access request required by a client and determining a corresponding support file according to the corresponding relationship between the file formats and the required support files; and sending the required support file to the client. According to the method and system, the rapid check of light file contents is realized; when users need to check file contents, the users can check the file contents through analyzing and obtaining required support files without pre-installing edition processing software corresponding to the file formats; and the sizes of the support files are far smaller than the sizes of the edition processing software, so that the using requirements for the users are decreased, and the users can rapidly check files and read the contents of the files without being familiar with the file formats and corresponding software.