Capacity interacting method and device between remote presentation endpoints and data flow

The invention discloses a capacity interacting method and device between remote presentation endpoints, and a data flow. The device comprises the step of performing capacity interaction between a first remote presentation endpoint and a second remote presentation endpoint, wherein a capacity interaction message carries a remote presentation endpoint capacity set, the remote presentation endpoint capacity set comprises a remote presentation endpoint symmetric capacity set, and the first remote presentation endpoint can open a logic channel between the first remote presentation endpoint and the second remote presentation endpoint according to the capacity interaction result. According to the method and device disclosed by the invention, the capacity interaction between the remote presentation terminals is realized, and the user experience is improved.