Abstract: This paper presents a brief review about the existing methods for interpreting pre-consolidation pressure in clays from piezocone penetration tests.The empirical methods are compared and evaluated on the basis of the piezocone tests data on marine clay sites in Lianyun Port,while the pre-consolidation pressure determined from oedometer tests were used as the reference values.The simplest method is the method directly relating the pre-consolidation pressure to the net cone tip resistance.The study finds that this method is the most effective method.