Two types of paraffin gels were prepared by using the fumed silica(type A)and modified castor oil(type B)as gellants respectively. The influence of gel type on physical stability, yield stress, viscosity and thixotropy of differentgel types were investigated. The viscosity curves were fitted by using the Herschel-Bulkley(HBE) constitutive equation. Results show that there is little effect of gellant content and centrifugal force on the physical stability of type B paraffin gel, indicating that the physical stability of type B paraffin gel is better than type A paraffin gel. The yield stress and the viscosity of parffin gels increase with the increasing of the gellant content and the gellant content has less impact on the yield stress of type B than on type A. The viscosity of parffin gels decreases with the incrasing of the shear rate, and the parffin gels are shear thinning. The power-law index(n) of type A paraffin gel is from -0.029 to -0.172 with the increase of the gellant content and n for type B is from 0.510 to 0.342. The type A and type B paraffin gels all have a certain degree of thixotropy and little resilience.