The full text focuses on the actual engineering, and proposes a method to predict the actual cracking of the asphalt pavement under the condition of 5-10 years through the material performance test. Relying on the relationship between the cracking index and the low-temperature performance of asphalt materials, the 180s stiffness modulus values of 5 types of commonly used asphalts are obtained by fitting the CAM model, and the cracking indexes of various asphalts under the PAV state are predicted and proposed. Supported by data, the accuracy of this simulation method is verified. With the help of the investigation on the cracking situation of the core samples of the Changji Expressway, the prediction effect of the CI value on the actual cracking level of the asphalt pavement was verified. The results show that the 180s modulus calculation method of the asphalt beam obtained under the CAM model is simple and the data confidence is high. The predicted SBS modified asphalt cracking index is consistent with the actual cracking level of the pavement, which also proves the use of asphalt material performance to predict the pavement The feasibility of the method of actual crack resistance. According to the standard formulation, the CI value reference interval of five types of asphalt commonly used in northern China is given.