Abstract: At present,most constitutive models can hardly describe the accelerated creep behavior of soft rocks and hard rocks at the same time. A generalized Burgers model is used as the basic one to reflect the creep viscoelastic-plastic mechanical behavior of rocks and its application range is verified. Based on the theory of damage mechanics,a new creep constitutive model of viscoelastic-plasticity is obtained by establishing a viscoelastic-plastic body considering aging damage in series with the generalized Burgers model. Taking the slope shale of a hydropower project as the research object,the triaxial compression creep test is carried out. The creep data of shale are identified by the model,the model parameters are solved,and the sensitivity analysis is carried out.Based on the triaxial creep data of different hardness and types of rocks in relevant literature,a three-dimensional Cvisc model is introduced to simulate and compare,and the theoretical and experimental curves are analyzed,which fully shows the rationality and applicability of the model. At present,most models can hardly reflect the accelerated creep characteristics of different rocks. The model can describe the creep behavior of different types of rocks by verification,and still have good identification ability for different accelerated creep curves. The results provide some reference for rock accelerated creep mechanical behavior simulation and long-term stability study of rock mass engineering.