The rule of preparation methods and environment factors which influence the compression sensitivity was the prerequisite of utilizing the smart properties of SSM. Experiment test was carried out for the analysis of some factors that influence the compression sensitivity, including the steel slag content, curing regime, age, water content and temperature. It was found that the compressive sensitivity of SSM increased with the increase of steel slag content, water curing time and water content. And at early age, the compressive sensitivity of SSM decreased with the increase of age and the compressive sensitivity of SSM gradually stabilized after 28d age. When the water content was between surface drying condition and air seasoning condition or the temperature was between 5 ℃ and 25℃, the compressive sensitivity of SSM kept stable. The dominant factors for the compression sensitivity were water content and temperature, followed with age, and the influence of curing regime could be neglected. The influence of environment factors on the compression sensitivity could be weaken with the increase of steel slag content and selecting the stressresistivity change rate curve based on water content and temperature of SSM.