A method and a system for providing an electronic document, a mother book server and a child book client are provided. The method includes: generating a mother book by a mother book server; receiving, by the mother book server, a request message transmitted by a child book client; generating, by the mother book server, a corresponding child book for the child book client according to the request message and the mother book, and transmitting the child book to the child book client; acquiring, by the child book client, a first position information of a content corresponding to an operation instruction in the mother book, when the child book client receives the operation instruction from a user; and acquiring, by the child book client, the content corresponding to the operation instruction from the mother book server according to the first position information.