Abstract: In this paper the anti-squeezing ability of fractured rock injected by acrylamide grouts are discussed.This paper points out that the anti-squeezing ability of the grouted rock depends mainly upon the mechanical properties of acrylamide polymer itself, and the width of the fracture of rock has the most important influence upon the anti-squeezing ability of grouted rock.Acrylamide polymer filled in fine fractures possesses very high anti-squeezing ability, the fresh and aged acrylamide polymers bind together perfectly, and therefore the acrylamide gronts can be repeatedly grouted in curtain grouting engineering if necessary. The design of cement-acrylamide mixed curtain, the anti-squeezing ability of acrylamide polymer in consolidation and water proofing of sand, and the formulations and concentrations of acrylamide grouts are discussed in this paper also.