In view of the freeze-thaw spalling disease for loess cutting slopes in seasonal frozen regions, the effect of loess tensile strength cannot be ignored. Remolded loess taken from an artificial cutting slope in Heping Town, Lanzhou City, was analyzed in this paper to discuss the freeze-thaw attenuation characteristics of loess tensile strength. First, the tensile strength of loess samples under different water contents (11%, 13%, 15%, 17%, and 19%), different dry densities (1.55, 1.60, 1.65, 1.70, and 1.75 g/cm³), and different freeze-thaw cycles (0, 1, 3, 5, 7, 11, and 15) were measured with the axial splitting method. Then, a single-factor freeze-thaw attenuation model for loess tensile strength was proposed based on the freeze-thaw attenuation law of loess tensile strength. Finally, the multivariate freeze-thaw attenuation model for loess tensile strength was proposed based on a multivariate nonlinear regression analysis of water content, dry density, and tensile strength. Results show that the tensile strength presents an exponential decay with the increase of freeze-thaw cycles and reaches a stable value after three to five freeze-thaw cycles; the initial water content has a great influence on the freezing-thawing attenuation of loess tensile strength. The multivariate freeze-thaw attenuation model of loess tensile strength can forecast the tensile strength of Lanzhou loess with water content, dry density, and freeze-thaw cycles as variables.