An elastic nonlinear damage model of soil was presented according to the deformation property of soil. The soil was considered as a double scalar combining, the one is G material which flexible matrix is only relate to shear modulus of soil ,the other is E material which flexible matrix have only a connection with elastic modulus of soil. Defining double scalar to describe soil damage, respectively, using equivalent strain principle to establish elastic damage constitute relationship, respectively, through mergeing to attain elastic damage constitute equation of soil and obtain the evolution equation based on triaxial test, an elastic nonlinear damage model was presented. The model was applied to calculate foundation settlement and compared with tested results. The results showed that the model is rational.
