Compressive strength of cementitious grouting material with different water addition ratios after exposure to various high temperatures and cooled by different cooling methods for specific times was investigated. The results show that the compressive strength of cementitious grouting material with 12%(by mass)water added is significantly higher than that with 14%and 16%water added. The compressive strength of the cube specimen of the cementitious grouting material decreases with the rising of heating temperature. The cube compressive strength after exposure to fire changes significantly in the early stage， but it tends to be stable with time. Compared with the cubes cooled by natural cooling method， the compressive strength of those cooled by spraying water cooling method can be recovered more with exposure temperature rising. The results provide some references for the safety assessment after exposure to fire of the structures reinforced by using high performance cementitious grouting material.