Disclosed is a method for transmitting streaming media data, applied to a streaming server, including: determining priorities of data blocks of different types in streaming media data; respectively encoding the data blocks in the streaming media data to be broadcasted live currently to generate corresponding redundant codes; and after the streaming media data to be broadcasted live currently are completely sent, sequentially sending the redundant codes corresponding to the data blocks according to the priorities of the data blocks in the streaming media data from high to low.