Abstract: In order to improve the strengthening effect of cement-based grouting material on expansive loose and broken soft rock. In laboratory, the fluidity, consolidation rate and compressive strength of the grouting material reinforced by XPM nano grouting agent cement anchor grouting were studied.The suitable ratio of the grouting material is found. That is, the dosage of XPM nano perfusion agent is 8% to 10%, and the water cement ratio is 0.5~0.6. The experimental results show that the use of XPM nano perfusion agent can significantly reduce the amount of water, slow down the segregation precipitation, improve fluidity, and enhance the injection rate. It can shorten solidification time, reduce shrinkage rate and improve curing strength. It lays a foundation for ensuring the quality of grouting construction. And it has been successfully applied in the repair and reinforcement of the roadway of the car yard at the bottom of the shaft in Yuxi coal mine.