In this paper

the main index of identification of waterlog damage usingremote sensing are stated.By the discussion on related factors of waterlog damagesuch as the soil thermal inertia

soil water and soil temperature

the basic princip-les and methods of identification of waterlog damage are suggested.Because thewaterlog damage is related to many factors

the discriminant of waterlog damagewith many variables is developed based on the analysis of geographical relationships. The results show that remote sensing technique can be used to identify the waterlogdamage.