An orthogonal experimental group of saline soils with soluble salt anions (Cl -, SO 4 2-and HCO 3 -) was designed by orthogonal assistant and IBM SPSS statistics 21 software. The initial dynamic potentiodynamic polarization of X80 steel embedded in different saline soils was tested using a threeelectrode system. The statistical range and variance in the measurement data, the corrosion morphologies and composition of the X80 steel and the corrosion mechanism were analysed. The results show that the corrosion of X80 steel in S9 was the weakest, and the corrosion current density reached 4.9E-7. The corrosive behaviour of X80 steel in different saline soils exhibited the following order: S90.05), which may be due to the level selection of the experimental factors.