An embodiment of the invention provides a method for configuring priority of streaming media data, devices and a system, which relate to the technical field of communication, and can avoid the jamming problem occurred in the streaming media data playing process because the streaming media data downloaded by UE is not sufficient to play. The method comprises the steps that: a base station acquires feedback information which is used for indicating a state of the UE playing the streaming media data, wherein the streaming media data is streaming media data played by the UE at present; the base station obtains a current scheduling priority of the streaming media data; and the base station reconfigures the scheduling priority of first streaming media data according to the feedback information and the current scheduling priority of the streaming media data, wherein the first streaming media data is streaming media data which is not downloaded in the streaming media data.