Abstract: In order to greatly enhance the primary conpressive strength of cement grouting liquid used for anchor engineering, through laboratory and ground testing,types and weights of cement's additive obtained optimizing. Under the condition that the cement slurry is groutable,the conpressive strength of cement grouting liquid could increase 50 to 100 percent in two or three days condensing time, which would greatly enhance the construction speed of anchor engineering, timely control metamorphose of borderslope, as to insure safety of supporting system.