A content sharing method, comprising the steps of: receiving, by a social synchronization apparatus, a first content sharing request sent by a content server, wherein the first content sharing request comprises an internal identifier of content that a user requests to share and an identifier of a destination website, wherein the internal identifier of the content is an identifier of the content on the content server; acquiring, by the social synchronization apparatus, an identifier of the user on the destination website; querying, by the social synchronization apparatus, a stored first correspondence among the internal identifier of the content, the identifier of the destination website, and an external identifier of the content according to the internal identifier of the content and the identifier of the destination website, to acquire the external identifier of the content on the destination website, wherein the external identifier of the content is an identifier generated by the destination website for the content when the content is shared by using the content server for the first time on the destination website; sending, by the social synchronization apparatus, a second content sharing request to the destination website according to the identifier of the destination website and the identifier of the user on the destination website, wherein the second content sharing request carries the external identifier of the content and the identifier of the user on the destination website, so as to share the content on a home page of the user on the destination website; when no external identifier corresponding to the content on the destination website is acquired by querying the stored first correspondence according to the internal identifier of the content and the identifier of the destination website, sending a content publishing request to the destination website according to the identifier of the destination website and the identifier of the user on the destination website, wherein the content publishing request carries the internal identifier of the content and the identifier of the user on the destination website, so as to publish the content on the home page of the user on the destination website; receiving a content publishing response returned by the destination website, wherein the content publishing response comprises an external identifier of the content; and storing a first correspondence among the internal identifier of the content, the identifier of the destination website, and the external identifier of the content. receiving, by a social synchronization apparatus, a first content sharing request sent by a content server, wherein the first content sharing request comprises an internal identifier of content that a user requests to share and an identifier of a destination website, wherein the internal identifier of the content is an identifier of the content on the content server; acquiring, by the social synchronization apparatus, an identifier of the user on the destination website; querying, by the social synchronization apparatus, a stored first correspondence among the internal identifier of the content, the identifier of the destination website, and an external identifier of the content according to the internal identifier of the content and the identifier of the destination website, to acquire the external identifier of the content on the destination website, wherein the external identifier of the content is an identifier generated by the destination website for the content when the content is shared by using the content server for the first time on the destination website; sending, by the social synchronization apparatus, a second content sharing request to the destination website according to the identifier of the destination website and the identifier of the user on the destination website, wherein the second content sharing request carries the external identifier of the content and the identifier of the user on the destination website, so as to share the content on a home page of the user on the destination website; when no external identifier corresponding to the content on the destination website is acquired by querying the stored first correspondence according to the internal identifier of the content and the identifier of the destination website, sending a content publishing request to the destination website according to the identifier of the destination website and the identifier of the user on the destination website, wherein the content publishing request carries the internal identifier of the content and the identifier of the user on the destination website, so as to publish the content on the home page of the user on the destination website; receiving a content publishing response returned by the destination website, wherein the content publishing response comprises an external identifier of the content; and storing a first correspondence among the internal identifier of the content, the identifier of the destination website, and the external identifier of the content.