A method for conducting multi-screen interaction over a social network provided in the present invention, comprising: issuing a multi-screen interaction multimedia content message over a social network, the issued message containing a URL pointing to a specific server, which is used for a user to access after he/she logs in the social network at a mobile terminal and receives the message; the server storing a multimedia content URL corresponding to this URL, and storing an IP address of a playing terminal which is required to play a multi-screen interaction multimedia content and is associated with a social network account number of the user; and when the user accesses this URL at the mobile terminal, triggering the playing terminal to play the multimedia content under the multimedia content URL corresponding to the above-mentioned URL. After logging in to a social network, a user can enjoy multi-screen interaction as long as he/she receives a message, thereby greatly simplifying the use of multi-screen interaction.