The stress hardening characteristics of the reinforced rock mass in uniaxial compression tests were revealedby means of the experimental study on mechanical characteristics of cracked rock mass reinforced by bolting andgrouting. And the load-bearing mechanism of the reinforced rock mass was perfectly reflected by the experiment. Theresults can offer some useful advice for support design and stability analysis of deep drifts in unstable strata. The stress hardening characteristics of the reinforced rock mass in uniaxial compression tests were revealed by means of the experimental study on mechanical characteristics of cracked rock mass reinforced by bolting and grouting. And the load-bearing mechanism of the reinforced rock mass was perfectly reflected by the experiment. Theresults can offer some useful advice for support design and stability analysis of deep drifts in unstable strata.