Aiming at the default of cracking of cement-stabilized macadam base course coming forth easily,under the condition of moisture and temperature changing,a research on the gradation composition design of cement-stabilized macadam mixture considering shrinkage deformation factors was developed based on trial results of aggregates and kinds of cement.Unconfined compressive strength,splitting tensile strength,dry shrinkage and temperature shrinkage of 9 different kinds of aggregate gradation were tested to search effect of aggregate gradation on strength and deformation stability,and putting forward the improved design scheme on gradation composition to reform shrinkage performance and reduce dry shrinkage quantities for project employ. The research result has significance sense for improving crack resistance of cement stabilized macadam base course.