A method and device for displaying information operate during a call service based on an IPTV system. When a first user terminal calls a second user terminal, a person-to-person communication enabler in the IPTV system obtains identity information of media streams of a ring tone service corresponding to the first user terminal and/or the second user terminal. The obtained identity information of the media streams of the ring tone service is sent to an Internet Protocol Television service terminal corresponding to a first user and/or a second user, for playing corresponding media streams of the ring tone service.