Abstract: In order to better study the corrosion of concrete internal medium in the saline alkali area, the concrete and reinforced concrete model tests with different ions and different ion concentrations were constructed. Taking the clear water test block as the control group, the resistivity and polarizability of the test block in the maintenance period (28 days) were measured by the rock specimen tester and the rock specimen test frame, the one-way ANOVA for the measured values of each test block was carried out using SPSS software, and the differences in electrical parameters of each concrete were investigated. The results show that at the level of significance (α=0.05), the difference of resistivity between the water mixed test block and the solution mixed test block is not entirely significant, but the difference between the water mixed test block and the solution mixed test block is significant; the difference between the solution mixed test block and the solution mixed test block is not entirely significant, and the difference between the resistivity of liquid mixing test block is not completely significant. Therefore, the polarizability parameter can be used to distinguish whether the concrete test block is eroded by ions, and it is feasible to use the polarizability parameter to detect the erosion of concrete by salt and alkali.