In geotechnical anchorage engineering，the soil density has a influence on the shear creep behavior of anchor-soil interface. A special device for preparing the element anchor specimens in drilling method was designed and made to investigate the influence of soil dry density on anchor-soil interface shear creep behavior. Several specimens with different soil dry densities were prepared by using this device. Creep loads were applied by incremental step using a self-designed anchor - soil interface shear creep testing system. A cluster of interface shear creep curves in various stress levels for those specimens with different soil dry densities was obtained by T-K Tan's method. Anchor-soil interface long-term shear strengths in different soil dry densities were obtained by the isochronal curves method. Creep curves under partial stress levels of each specimen were selected and translated into isochronal curves. Creep models for each different soil dry density specimen considering shear stress were established by regression analysis for those isochronous curves using a hyperbolic model. The creep model for the anchor-soil interface considering the effect of shear stress and soil dry density was obtained by establishing an empirical relationship between creep model parameters and soil dry density finally. The prediction results show that the proposed creep model has good accuracy for both participated and no participated creep curves in modeling.