The one-dimensional unconfined compression creep test of Shenzhen bay marine soft clay is carried out by the consolidometer for studying marine soft clay creep property, and soft clay creep model is established. The result shows that Shenzhen soft clay creep deformation is mainly the instantaneous deformation and decay creep deformation. The creep deformation is nonlinear and the more obvious the greater the creep stress, and the higher the stress level, the more significant nonlinear characteristics, the complexer shear creep characteristics. The creep property of Shenzhen soft clay may be well described by the Burgers model, especially the decay creep stage and steady creep stage fit well. The steady creep deformation is significantly affected by the stress level, the greater the performance of the consolidation stress, the greater the steady creep deformation, the longer the standard time. It is revealed that in actual projects, when the load on the soil is big, we must consider the damage to buildings due to the creep deformation.