In view of the difficulty of segregation evaluation methods of the existing cement stabilized macadam to accurately evaluate the situation of mixture segregation, the segregation resistance of five kinds of cement stabilized macadam mixture with different levels was quantitatively analyzed by indoor segregation test, and the shape segregation coefficient L and sieve segregation coefficient Seg were introduced to quantitatively classify the segregation degree of cement stabilized macadam mixture. The results show that compared to 4% (all are mass fraction) cement content, the segregation resistance of mixture with 5% cement content is significantly improved, and the segregation resistance of mixture with 5% and 6% cement content is not significantly different. Therefore, 5% cement content is more recommended. When the 4.75 mm pass percentage of mixture is 35% and 40%, a strong force chain structure is formed inside the mixture to resist the discrete trend of aggregate in the falling process, and the segregation grade of the mixture with 5% and 6% cement content remains in a state of no unsegregation and minor segregation, which demonstrates excellent segregation resistance of cement stabilized macadam.