The cone penetration test with pore pressure measurement (CPTU) data can be used to interpret the undrained shear strength of cohesive soil,but the undrained shear strength of cohesive soil is not a fixed value by the different test methods.Through comparative analysis,we obtain the correlations of CPTU data with fine-grained soil’s undrained shear strength derived from different testing methods (including direct shear test,consolidated direct shear test,unconsolidated undrained triaxial compression test,etc).The results show that the undrained shear strengths of cohesive soil by different tests have good correlation with CPTU data.The undrained shear strengths of cohesive soil by different tests should be converted by the coefficient Nkt.