Alkali solution was prepared with Na2SiO3, NaOH and Ca(OH)2, then steel slag was activated using alkali solution obtaining zeolite hydrochemical products. The effects of Na2SiO3 amount, NaOH amount and Ca(OH)2 amount on the compressive strength of the alkali steel slag cementations materials were studied. The optimal compressive strengths of materials were characterized. The results showed that Na2SiO3 has significant effect on 7 d compressive strength of materials, NaOH had significant effect on 3 d compressive strength of materials, Ca(OH)2 has significant effect on 28 d compressive strength of materials. When Na2SiO3 amount was 11.25 g, NaOH amount is 4.50 g and Ca(OH)2 amount is 6.75 g, the compressive strength of materials was the best. The addition of alkali solution is beneficial to the formation of zeolite hydrochemical products in the gelation system.