On the basis of the mathematical model and Bayes distinction principle, with the objectoriented method of exploitation, under the Windows 2000 operating syste ms, an EOS/MODIS snow remote sensing monitoring system is successfully developed by using the Microsoft Visual C〖JP9〗++〖JP〗. NET. With 3S technolo gy, the syste m has realized the seamless connection between various modules as well as the mu ltiplex snow identification (automatic and manmachine interaction). The system runs well, and may provide the high grade and abundant snow products for the use r.