As a scientific way of land resources research, it should bo the toppriority to build up a general framework,i.e.,land classification system,which can imbody distribution and evaluation of land resources. In thiscase, common land features can be definited and described, and land typesspatially departed can be linked.Being a kind of renewable resources, landalways is in variation due to influence of social and natural conditions.Onlyland dynamic law was studied deeply, all land features can be ascertained and reasonable land use plan can be worked out. A series of romotelysensed data of multitimes, spectra and platforms supply abundant information to land resources investigation. It is one of the most importanttask in the future land research to give a full play of remote sensing potentialities.