Abstract: In this paper,we have discussed the method for analysis of stress-strain ratio associated with rock creep.Creep is one of the most important characteristics of rock.Under different stress states,rock creep curves show the behavior of geometry-comparability.We can gain the isochronous-modulus curves from the curves of stress-strain ratios.The constitutive equation of rock is so complex that well accepted method is still not available in the open literuary erure.At present,the analysis ofstress-strain ratio can be a good approach to further the examination of rock creep behavior.