The present invention belongs to the information processing field and discloses a method and apparatus for associating information. The method for associating information comprises: obtaining identification information of a first content; associating the identification information of the first content with a second content, wherein the second content is created for the first content; obtaining identification information of a third content, wherein the third content is an updated version of the first content, the third content containing revision made according to the second content; and associating the identification information of the third content with the second content. With the method and system for associating information as provided by the present invention, contents of a plurality of versions can be managed and traced efficiently without a need to modify the existing code review flow.