Page is the basic unit of data exchange between disk and memory, in operating systems, database management systems, and inverted file's data organization, it occupies a very important position. To reduce the inverted index's disk I/O read and write overhead, proposing a method that the inverted file storages by pages, and achieving to read and write files by page. This method mainly contains three parts, including disk I/O layer design, page manager design, and heap file manager design, achieving variable page size's data file management using block, supporting for the fixed-length records, variable-length records storage assembly in the page and super long data record's cross-page storage. The experimental test results show that the method is effective, and it can be applied to actual vertical search engine.