Abstract: Rockfill is the main material used in rockfill dams, and the research of creep properties is a focus of soil mechanics. The creep test mainly contains triaxial creep test and one-way compression creep test. The axial deformation of triaxial creep test is mainly caused by shear. Now it ' s lack of the compression creep test, which can study the K0 condition creep. So the creep properties of rockfill are studied in laboratory by the triaxial apparatus( Ф 300 mm) and the compression apparatus( Ф 500 mm), the results show that the relationship of surplus creep and time both can be expressed accurately by power function. The versatility of nine parameter creep model is verified by triaxial creep test, and one empirical formula from compression test result is put forward. At last, the two creep methods are compared, it is found that the compressive creep test may regard as a triaxial creep test with stress level being 0.4, it can ' t reflect the influence of stress level, so researching the creep of rockfill suitably uses the triaxial creep method.