Abstract:Effect of seismic frequency and amplitude on attenuation,Young's modules, Poisson's ration,compressional wave and shear wave velocity and anisotropy has been studied when loading sine-wave on pumped oil-saturated Nanjing sandstone to model seismic propagation in reservoir sandstone. The obtained results are follows: ①Young's modulus,Poisson's ration and compressional wave and shear wave ve- locity increase with increasing frequency of sine-wave and the higher frequency is, the faster increasing rate is and the more obvious dispersion effect is;②attenua-tion increases with increasing strain amplitude while Young's modulus,Poisson's ration and compressional wave and shear wave velocity instead when fixed frequency;③obvious anisotropy exists in above mentioned physico-mechanic and dynamic parameters whether frequency increased or strain amplitude increased. These anisotropy related both with intrinsic anisotropy of sandstone and with that saturat- ed fluid flows and disperses along the direction that pressure was loaded on,as the pressure caused small non-destructive deformation,so it resulted reservoir anisotropy.