A method for switching a Click To Dial, CTD, service to a multimedia conference service, comprising: providing a console for switching the CTD service to the multimedia conference service, at least one user equipment performing the CTD service with another user equipment, wherein after a console binds with said at least one user equipment, an application server reports a status of the user equipment to the console at any time and accepts commands from the console; and when the user equipment which is bound with the console needs to switch from the CTD service to the multimedia conference service, the console sending an INVITE to the application server through a Next Generation Network to trigger the multimedia conference service, wherein said INVITE carries a command of switching from the CTD service to the multimedia conference service; said application server receiving said INVITE and sending a re-INVITE to at least one user equipment of the user equipments who are performing the CTD service with each other; said at least one user equipment receiving the re-INVITE and returning a 200 OK to said application server, wherein said 200 OK includes media description information of said at least one user equipment; said application server receiving media description information of said at least one user equipment, and exchanging the media description information of said at least one user equipment with media description information of a media server to make the media server establish a relationship with said at least one user equipment according to the media description information of said at least one user equipment; said application server sending the media description information of said media server to said at least one user equipment to make said at least one user equipment establish the relationship with said media server according to the media description information of said media server; said application server sending a 200 OK to said console; said application server sending a command of creating a multimedia conference to said media server, and said media server creating the multimedia conference, and said application server adding said at least one user equipment into said multimedia conference. providing a console for switching the CTD service to the multimedia conference service, at least one user equipment performing the CTD service with another user equipment, wherein after a console binds with said at least one user equipment, an application server reports a status of the user equipment to the console at any time and accepts commands from the console; and when the user equipment which is bound with the console needs to switch from the CTD service to the multimedia conference service, the console sending an INVITE to the application server through a Next Generation Network to trigger the multimedia conference service, wherein said INVITE carries a command of switching from the CTD service to the multimedia conference service; said application server receiving said INVITE and sending a re-INVITE to at least one user equipment of the user equipments who are performing the CTD service with each other; said at least one user equipment receiving the re-INVITE and returning a 200 OK to said application server, wherein said 200 OK includes media description information of said at least one user equipment; said application server receiving media description information of said at least one user equipment, and exchanging the media description information of said at least one user equipment with media description information of a media server to make the media server establish a relationship with said at least one user equipment according to the media description information of said at least one user equipment; said application server sending the media description information of said media server to said at least one user equipment to make said at least one user equipment establish the relationship with said media server according to the media description information of said media server; said application server sending a 200 OK to said console; said application server sending a command of creating a multimedia conference to said media server, and said media server creating the multimedia conference, and said application server adding said at least one user equipment into said multimedia conference.