Abstract: Taking tests of granite rockfill materials under various stress paths (e.g., triaxial test, constant p test and constant stress ratio test) as a case study, comparison between the generalized plasticity model and Shen's double yield surface model is made to study the adaptability of stress path. It is testified that the deformation of rockfill materials under triaxial stress paths can be well reflected by the two models. The strength prediction results of the two models are consistent with those of the constant p test, while prediction results of volumetric strain have larger deviations. Applying the two models to the constant p test may underestimate the shrinkage properties of rockfill materials. As for the constant stress ratio test, Shen's double yield surface model presents better results than the generalized plasticity model, well reflecting dilatancy and shrinkage properties of rockfill materials. However, the prediction results of the generalized plasticity model are quite different from experimental measurements, compared with Shen's double yield surface model. Therefore, the dilatancy equation of the conventional triaxial test is not suitable for the constant stress ratio test. The prediction precision of the generalized plasticity model for the constant stress ratio test is greatly improved by employing a modified dilatancy equation.