Model grouting tests were carried out to investigate the effect of amplitude and frequency of the injecting speed. From these tests, the following conclusions were obtained. 1) The fracture generated by the dynamic grouting method was less than that by the ordinary method. The effect of the fracture generated by the dynamic grouting method on the shape of grouted part was not significant. The fracture generated by the dynamic grouting method seems to increase as frequency increases. 2) The strength of grouted part by the dynamic grouting method was greater than that by the ordinary method. The effect of the amplitude of injecting speed on the strength of grouted part was significant.