Abstract: The rubber asphalt was processed by the eight different matrix asphalts.The rubber asphalt zero shear viscosity(ZSV) was fitted by Cross flow, Carreau model and Matlab, Origin software.The correlation was analysised by the matrix four components and the rubber asphalt ZSV according to the grey correlation method theory.The rubber asphalt ZSV variability was discussed under different loading modes and the sensitive factors influencing the rubber asphalt ZSV were studied.The results show that the Cross model fitting degree to the rubber asphalt sample data is more than the Carreau model; The rubber asphalt ZSV is different fitted under the static load and dynamic load model; The repeated creep stage creep test fitting results and recovery phase fitting results are in the same magnitude order; The rubber asphalt ZSV measured by Brookfield viscosity decreases the increse of the test temperature; The correlation results of frequency scanning test, repeated creep test, different temperature and rubber asphalt rotary shear viscosity are consistent, namely that the aromatics are the strongest sensitivity according to ZSV of rubber asphalt.