Abstract: Based on the measured borehole data in the earthquake safety assessment of Liuzhou region, Guangxi, three models （linear, power function, quadratic function models） were used to fit and analyze the correlation between shear wave velocity of soil layer and burial depth in this area. And then the power function model was selected to analyze the correlation between the depth of the soil layer and corresponding shear wave velocity in the area, and the influence of the soil state on the correlation between the two parameters was also discussed, and finally the actual drilling was taken as an example to verify the accuracy and reliability of the model. The obtained results are as follows: ① except artificial filling, there is a strong correlation between the shear wave velocity and the buried depth of common soils in the area, and the correlation can be affected by the region where it is; ② the soil state can significantly improve the prediction accuracy of the model.