The invention provides a mobile terminal. The mobile terminal comprises an information obtaining unit and a transceiving unit, wherein the information obtaining unit is used for obtaining current position information when detecting preset operation, the preset operation includes the shaking operation and/or the trigger operation, the transceiving unit is used for sending a position information and conference room information inquiry request to the conference server, receiving inquiry result data sent by the conference server, receiving a processing command from the outside world and sending the processing command to the conference server. Accordingly, the invention further provides the server, a conference room booking system and a conference room booking method. Through the technical scheme, the limit that conference rooms can only be booked by offices can be broken, office businesses can be handled in a mobile mode any time any place, and the work efficiency and convenience can be improved.