The invention discloses an earth electrode dynamic corrosion process simulation method based on an electrochemical polarization curve test. The method mainly comprises the steps that first, a three-electrode system is adopted to test polarization curve data of different test electrodes in soil simulation solutions with different pH values with the test electrodes being working electrodes and the soil simulation solutions being electrolytes, and therefore a polarization curve database is constructed; and second, boundaries on surfaces of the test electrodes are set to be deformation boundaries,an interpolation function of the polarization curve data is used as a corrosion reaction kinetic data source of the test electrodes, a finite element method is adopted to simulate coordinates of allpoints on the surfaces of the test electrodes at all moments, and therefore a qualitative dynamic corrosion process of the test electrodes is obtained. Through the method, the dynamic corrosion process of different earth electrodes in different soil simulation solutions can be simulated, and simulation accuracy is higher; and meanwhile, true corrosion conditions of the earth electrodes can be quantitatively analyzed according to the simulated dynamic corrosion process.