Hello, Chunhua Song.
Thank you for your interest in the Genome Browser and for your question about uploading your BED dataset.
One option would be to create a custom annotation track. More information on creating custom annotation tracks, including sharing these tracks with others, can be found on the following help page: http://genome.ucsc.edu/goldenPath/help/hgTracksHelp.html#CustomTracks. Custom tracks are recommended if you wish to share only a few datasets.
If you have very large sets of data, then you may be interested in creating a Track Hub. You can read more about Track Hubs here: http://genome.ucsc.edu/goldenPath/help/hgTrackHubHelp.html.
If you would like to submit your track hub to be included as a public hub (http://genome.ucsc.edu/cgi-bin/hgHubConnect), here are some additional standard guidelines: http://genomewiki.ucsc.edu/index.php/Public_Hub_Guidelines
I hope this is helpful. If you have any further questions, please reply to gen...@soe.ucsc.edu. All messages sent to that address are archived on a publicly-accessible Google Groups forum. If your question includes sensitive data, you may send it instead to genom...@soe.ucsc.edu.
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