Abstract: Polyvinyl alcohol(PVA) fiber reinforced cementitious composites containing steel slag powder were prepared by replacing cement by steel slag powder. Both of the basic mechanical and microscopic properties were tested. Two series of PVA fiber reinforced cementitious composites containing steel slag powder with water to binder ratio of 0.25 and 0.35 were investigated, and the mass fraction of steel slag powder were 0, 30wt%, 60wt% and 80wt%. The basic mechanical properties and crack control capacity were investigated through cubic compressive test and four-point bending test. The morphology of PVA fiber reinforced cementitious composites containing steel slag powder was observed via SEM technique. The test results indicate that water to binder ratio and steel slag content can both influence the basic mechanical properties distinctly. The specimens with water to binder mass ratio of 0.25 performs good toughness and crack control capacity, meeting the basic requirements of engineering when the content of steel slag powder up to 80wt%. The steel slag content should not exceed 60wt% when the water to binder mass ratio is 0.35 for good performance. Meanwhile, considering energy saving and emission reduction, it is feasible to use high volume steel slag in producing PVA fiber reinforced cementitious composites containing steel slag powder.