In this paper, the crosslinking process of kerosene-based and diesel-based fracturing fluids was studied with dialkyl phosphate ester as gelling agent and complex iron as crosslinking agent, and the rheological dynamics models, which were respectively suitable to describe the crosslinking process of kerosene-based and diesel-based fracturing fluids, were established. The results showed that the second-order and third-order rheological dynamics equations could be applied to describe the crosslinking process of kerosene-based and diesel-based fracturing fluids, respectively, the calculated values were in good agreement with the experimental data, and the meanings of the model parameters were reasonable. With the increase of the concentration of the gelling agent, the structure change rate constant (k) decreased and the maximal elastic modulus (G′max) increased.