Through interior shear rheological tests,this paper study the anchor creep effect-the mechanical properties of bolt-grouting body interface and anchor pre-stressing loss changes over time. The results show that anchor pre-stressing loss increases along with the increase of the load increases under conditions of considering creep effect; bolt-grouting distribution of interfacial shear rapidly increases with the length of the rod to the peak,then gradually reduced small,and with the growth of time,the peak gradually shifted and then disappear finally.