Supported by RS and GIS technology, combining the former achievements in scientific research and lots of field investigations, we used IRS image of 2000 and Landsat-TM images of 1984, 1989, 1992, 1996, 1998, 2002 and 2004 as information source, then, with the help of GIS and RS software, interpreted the images and built up Beijing wetland resource and ecological environment information system. On the basis of it, we can dynamic monitor wetland resource and wetland change trend of Beijing region in the past twenty years, including the wetland type, area and distribution; wetland biodiversity; wetland exploitation, etc. After all of these, analyze the actual state of wetland resource and the dynamic change of wetland in Beijing region. Keyword--GIS, RS, Beijing wetland resource, dynamic monitor