Method as well as device and communication system for retransmitting streaming media data

The invention discloses a method for retransmitting streaming media data, which comprises the following steps: coding streaming media data to be transmitted and distributing a priority level to a media frame obtained after coding; sealing the media frame by utilizing a transportation protocol, adding the priority level of the media frame on the head of a sealed data package and sending the data package; and if a response message is not received after set waiting time, then retransmitting the data package when the priority level in the data package meets a first set condition. The method reduces the requirement for application level network equipment and improves the feedback speed and the final experience of users. The invention also discloses a method for displaying the streaming media data, a device for retransmitting the streaming media data, a device for displaying the streaming media data and a communication system.