The growth characteristics of the pore- water pressure of loess and the associated models and parameters are important for evaluating the liquefaction of loess sites under seismic loads. In this paper, the liquefaction characteristics, applicability of typical pore- water pressure models, and value ranges of parameters for the loess in the Dongzhi tableland of Qingyang City (Gansu Province, China) were studied via a series of liquefaction tests under different soil properties and loading conditions. Three types of pore- water pressure growth curves of saturated remolded loess under dynamic loading have been discovered, and their applicability to various pore- pressure models is verified via a comparison, and the value ranges of parameters for models with better applicability are provided. The parameter α of the Seed model ranges from 1.09 to 1.84, parameter β of the A- type curve model ranges from 1.70 to 2.52, and parameter θ of the power function model ranges from 1.13 to 1.75. The models are verified by the pore pressure curve of the loess in the Longxi area. Results reveal that the parameter range of these models has regional characteristics. For Longxi loess, the fitting parameters of the Seed model, A- type curve model, and power function model are 0.91, 8.32, and 3.51, respectively.