Most overseas projects are carried out according to European standards and America standards. The European and American sandy soil liquefaction evaluation methods are quite different from Chinese standard and are more complex，which are not yet accepted widely and applied correctly by most domestic surveying technicians. This paper interpretes the Code for Seismic Design of Water Transport Engineering，the BS EN 1998-5：2004，Eurocode 8，and the America Seed method on the sand liquefaction evaluation. A comparative analysis of the three discrimination methods combined with engineering cases reveals the differences with the winning bid，and systematically displays the full picture of European and American discrimination standards，including its principles，discrimination conditions，discrimination procedures，and related characteristics. On this basis，in view of the defects and problems existing in the European and American discriminant method，the evaluation methods have been simplified under the premise of conforming to the standard and error permissible，making them easier to use the European and American standards to discriminate liquefaction.