Abstract: Due to the rheologic properties of surrounding rock mass, it is of great significance to understand and predict the roadway deformation in both roadway support practice and the safety of roadway in the whole service stage. In this paper, the multi-stage load creep tests were selected to determine the creep property, and the genetic algorithm was employed for establishing the parameters required in the creep mechanic model. Combined with site monitoring, the deformation induced in the complete process of roadway in the soft rock mass was accurately described.