Abstract: Based on the virtual framework structure, the paper established the system of remote sensing monitoring and evaluation for wetlands in Northeast China. Considering the characteristics of the wetland, the system provided basic functions, such as data calibration, projection, geometric correction , resample and so on. The system achieved the calculation of a variety of satellite data and GIS data ,generate various monitoring parameters such as wetland type, wetland area, changes in wetland area and other underlying features of wetlands for its application, realize basic image processing functions such as data registration, data analysis, thematic mapping and image display, give assessment on the influences of climate and cultural features on the change of wetland on the basis of conventional geographic information processing, and publish the remote-sensing monitoring and assessment results and comprehensive assessment with respect to of wetland in Northeast China .