The hydration characteristic of cement-limestone power cementitious system is described based on the effect of limestone power on the hydration of C3S,C3A and cement concrete.On the basis of above all,the research status at home and abroad of the cement-limestone power cementitious material is summarized from the influences of limestone power on the rheology,strength,dimensional stability and durability of cement-based materials.Aiming at the problems of the present limestone powder cement-based material research,the importance of completely and systematically studying the cement-limestone power cementitious system is discussed.