In order to study the effect of gradation on the performance of low-dose cement modified graded gravel, and to promote the popularization and application of low-dose cement modified graded gravel base structure, four representative gradations are selected for preparation of low-dose cement modified graded gravel with reference to the grading range of cement stabilized macadam and graded gravel in the relevant specifications.To compare and analyze the road performance of low-dose cement modified graded gravel with different gradations and its variation rule with age,the unconfined compressive strength, compressive rebound modulus and CBR test, dry shrinkage test and temperature shrinkage test, liquid-plastic limit test and water seepage test were carried out.The results show that the gradation has obvious influence on the road performance of low-dose cement modified graded gravel.The excessive coarse aggregate will reduce the unconfined compressive strength and the compressive rebound modulus, while the fine aggregate will reduce the CBR value.The effects of gradation on dry shrinkage and temperature shrinkage are similar to each other. Increasing coarse aggregate and reducing fine aggregate are beneficial to control the shrinkage crack in gravel base.No matter what kind of gradation, low-dose cement modified graded gravel has good performance on water permeability and water stability.In summary, it is suitable to select skeleton dense gradation with certain content of coarse and fine aggregate for low dose cement modified graded gravel.