Abstract: In order to study the long-term change law of rock structure, the creep test of rock structure under different loads is carried out. A method for determining the parameters of rock creep damage model considering accelerated creep is proposed by matching the creep model with each stage of the classical creep curve one by one. The change rule between creep model parameters and stress is analyzed, and the expression between stress and creep parameters is established. An improved creep damage model of rock considering accelerated creep is established. Test curves and model curves are used to compare with each other, and the reasonableness of the model is verified by analyzing the agreement between test curves and model curves. The research results show that the established creep model curve is in good agreement with the accelerated test curve. This finding indicates that the established model can overcome the shortcomings of the traditional Nishihara model that cannot describe accelerated creep. In addition, the model can well predict the accelerated creep characteristics of rock under high stress. The elastic modulus of the elastomer shows a decreasing trend with increasing stress. This shows that the increasing stress makes the damage inside the rock accumulate, which leads to the decrease of the elastic modulus of the elastomer. And the variation rule of σ/E_e increases with the increase of stress. This shows that the transient strain of the rock is increasing. With the increase of stress, the viscoelastic modulus E_ve decreases gradually. Specifically, E_ve/η_ve mainly controls the viscoelastic change. The viscous coefficient η_vp shows a decreasing trend with increasing stress. σ/η_vp shows an increasing trend with the increase of stress. The viscous coefficient η_ac shows a decreasing trend with increasing stress, which effectively reflects that accelerated creep continues to intensify as stress rises. σ/η_ac shows an increasing trend with increasing stress. The damage coefficient β_ac decreases with increasing stress. However σ/β_ac shows a gradual increasing trend.