The invention provides a method and system for file type identifying and analyzing, which is high in processing efficiency and accuracy, simple in parameter configuring and speedy in analyzing. The method for file type identifying and analyzing is a method for identifying file type read from a database and making an analysis, characterized by comprising the following step: a loading step for loading file categories and file format parameters into a memory; a file reading step for reading files from the memory; a file type identifying step for determining whether the read files are of the file type that can be identified by the memory; a file analyzing step for analyzing files and generating an analysis report in the event that the file type can be identified. With the invention, the time required for file analysis can be effectively shortened and the accuracy of file identifying and analyzing can be ensured.