The numerous methods of the liquefaction determination are available in the worldwide.Due to the different determination basis of each method,the different calculation accuracy and different conclusions may be achieved by different methods.In order to improve the accuracy of the liquefaction potential determination,we compare and analyze the most commonly used methods for liquefaction determination,and then further clarify the applicability of NCEER method and LPI method for different seismic liquefaction sensitivity requirements.The results show that NCEER method can be used when the sensitivity of seismic liquefaction is high,and it is more suitable for evaluation of single point liquefaction potential.LPI method can be used to evaluate the overall liquefaction potential when the seismic liquefaction sensitivity is low.The results are successfully applied to the ground improvement of the inlet canal in JIGCC project,which can provide strong technical support for the project construction.