A method, a system and an apparatus for providing streaming media service are disclosed. The system includes: a master mobile terminal configured to establish a connection with a streaming media server, and perform acquisition, encoding and transmission of local audio and video data; a slave mobile terminal configured to establish a connection with the streaming media server, receive the audio and video data transmitted from the master mobile terminal, decode the audio and video data received, and play the audio and video data decoded with a local streaming media player; and the streaming media server configured to manage a connection between the master mobile terminal and the slave mobile terminal, establish a temporary user packet, and forward a streaming media data flow transmitted by the master mobile terminal.