A streaming data downloading method is illustrated, which is adaptive to a video player downloading a video file from a video server via Internet. The streaming data downloading method comprises: sending the request to the video server to download the video file and downloading the buffering data from the beginning of the buffering section; calculating the downloading time for downloading the whole buffering data, dividing the downloading time to a plurality of time sections to separately download the buffering data of each time sections from the video server; selecting at least one section as the downloading section and sending a request to the video server to download the data of the chosen section to form multiple downloading channels according to the number of the channels; and simultaneously downloading the data from multiple downloading sections according to multiple downloading channels. Therefore, data of the video file may be downloaded efficiently and waiting time for users may be drastically reduced.