The invention provides a method and a device for scheduling a protocol stack in a remote presentation system. The scheduling method comprises the steps that a remote presentation endpoint acquires the first state of an H.323 protocol stack and the second state of a third party protocol stack, wherein the third party protocol stack is used for carrying out interaction and negotiation on new characteristic parameters of the remote presentation system, and the new characteristic parameters are different from the content of capability negotiation carried out through the H.323 protocol stack in the remote presentation system; and the remote presentation endpoint schedules the H.323 protocol stack and/or the third party protocol stack to carry out corresponding internal processing actions according to preset scheduling rules on the basis of the first state and/or the second state. By adopting the technical scheme provided by the invention, technical problems such that a solution of introducing the third party protocol stack, for example, a CLUE protocol stack, into an H.323 system so as to realize interaction and negotiation of the new characteristic parameters is unavailable in related technologies are solved, thereby realizing cooperative scheduling of multiple protocol stacks in the remote presentation system.