The properties of broken rock before and after grouting reinforcement are studied. Te st-ing results show that grouting can raise the residual strength of broken rock, and the broken rock-ness by grouting can keep the steady supporting capacity within a relatively large deformation range. Revealing of the characteristics of stage deformation and damage process comes to the conclusion that the supporting of soft rock roadway should be analyzed in a dynamic view, and the grouting should be delayed at a properocca sion. Ba sed on the above, the stepwise reinforcement technology characterized by immediate shotcreting, timely bolting and delay grouting is put forward and illustrated with a succes sful engineering practice.