The invention discloses a method and system for processing streaming media. The method comprises the following steps: receiving a code stream of original video file data by a streaming media access gateway; streaming the code stream and then performing format conversion on the streamed code stream; repackaging after performing the format conversion; and then transmitting the processed code stream on a streaming media server. The system comprises the streaming media access gateway and the streaming media server, wherein the streaming media access gateway is used for receiving the code stream of the original video file data, streaming the code stream and then performing format conversion on the streamed code stream, repackaging after performing the format conversion, and transmitting the processed code stream on the streaming media server, and the streaming media server is used for receiving the code stream converted by the streaming media access gateway. By using the technical scheme of the invention, the trans-coding treatment is realized, the media stream is converted into a uniform format, and the videos transmitted from other systems can be uniformly converted into the videos with specified attribute, and the user requirement is met.