Abstract: The effects of different amount of water and pisolite on the workability and mechanical properties of pisolite grouting material(PGM) were studied.The results showed that the workability of PGM with 13% water content was better,the mechanics indexeal of PGM decreased with the increment of water,and increased with the enhancement of pisolite when the amount of water less than 14% and pisolite less than 35%,moreover,tensile strength of PGM was approximately 40% higher than that of ordinary concrete.Finally,based on the experimental data,the regression formulas among mechanical indexes were put forward.