A method for integrating Really Simple Syndication (RSS) documents includes extracting a data element set from an item of an RSS document and data elements contained in the data element set through a tag processing procedure; establishing a menu pool for displaying the content of the data element set and the content of the data elements; executing an editor to compose and edit the selected data element set and data elements, so as to combine the selected data element set and data elements into a new item; and outputting the new item as a target output document. Through the method, the content of various RSS documents is integrated into a customized Hypertext Markup Language (HTML) or RSS document meeting the requirements of a user.