Abstract: The effects of mass fraction of steel slag, water to binder ratio of single cemented paste, and volume ratio of double slurry on the working capability of dual-fluid gout were investigated. The optimum water to binder ratio of slag-modified Portland cement slurry is 0.6-0.8, and the optimal mass percentage range of steel slag with 20.4 μm average particle size in steel slag modified Portland cement slurry of 50%-80%. There exits an appropriate volume ratio of 4:1-6:1 between slag-modified cement slurry and sodium. According to above parameters the steel slag modified cement-silicate dual fluid gout was prepared and cured in water for 3 days after demolding, whose early average compressive strength and corresponding softening coefficient are over 40 MPa and 0.80 respectively.