The present invention provides a shared presentation method and a system and mobile device thereof. The shared presentation method comprises steps of: an initiator establishing a shared studio, and sending invitation information of the shared studio through a network; a receiver that receives the invitation information participating in the shared studio through establishing a network connection; the initiator sending a presentation document and a play control instruction on the presentation document to the receiver that participates in the shared studio; and the receiver receiving the presentation document and the play control instruction, and locally executing a play control operation on the presentation document according to the play control instruction. The mobile device comprises the shared presentation system. The shared presentation method and the system and mobile device thereof provided by the present invention are capable of simultaneously presenting a demonstration document on multiple mobile devices.
