The anchorage behavior of the GFRP（glass fiber reinforced polymer）bolt, inclu- ding bond strength with different strength grade of mortar and drawing strength with variation of bolt diameter through bond strength test between GFRP bolt and mortar, have been researched. Meanwhile, the stress distribution of the anchoring interface is simulated by theoretical analysis. The distribution form of axial force of bolt and stress of anchoring interface has been simulated by mathematical model.