A ship lock is located in the gypsum dissolution zone，and the compression fracture zone and closed dissolution pores are generally developed in the foundation. To quantitatively evaluate the effect of grouting，we carry out the tests such as the test of rock block density，wave speed，compressive strength，rock mass bearing capacity and wave speed before and after grouting. Then we carry out the comparison and regression analysis of the test results before and after grouting，and propose suggestions for optimizing the grouting scheme. The results show that the physical and mechanical index test values of the rock block and rock mass have large dispersion，and the average value shows correlation. The dissolution pores developed in the foundation of the ship lock are relatively independent and have poor connectivity. Consolidation grouting has a limited effect on improving the bearing capacity of the rock foundation.