Abstract: A method for notifying presence information is disclosed. The method includes: setting, by a presentity, notification rules; when receiving the presence information sent from a presentity client or presentity application server, transferring, by a presence server, to a watcher client or watcher application server the presence information that is conformable to the notification rules as well as content related processing rules set by a watcher and the presentity. The present invention further discloses a system for notifying presence information, a presence server and a presence XDMS. Compared with the prior art, the present invention takes advantages of resources of a presence server more appropriately and enables the publication of presence information to be more rationalized and humanized. Thus a user may determine whether to receive the published information and what published information to receive according to the actual requirement.