In this study, Yangling Lou soil and Nenjiang Mollisol were selected, and four soil bulk density gradients (1.0, 1.1, 1.2 and 1.3 g/cm3) were set. Centrifuge and pressure plate methods were used to determine the SWRCs, and the van Genuchten (VG) model was used to fit the SWRCs. The results show that with the increase of bulk density, the accuracy of determining soil water retention curves by centrifuge method gradually increase,and the accuracy of obtaining parameter α of van Genuchten model increased by 38.46% - 83.08% in Mollisol and 56.38% - 95.70% in Lou soil. Centrifuge method different accuracy in different suction performance, near saturation suction (0-10 kPa) centrifuge method measured value is low, and high suction (10-1500 kPa) measurements on the high side, and high suction segment (10-1500 kPa) centrifuge method accuracy is low, and pressure plate measurements have significant differences (P<0.01). In conclusion, in order to improve the accuracy of determination, centrifuge method is preferred to be applied to soil large bulk density and high organic matter content.