Abstract: Grouting holes arranged on rod body can lead to increased stress and strength because of the influence of the holes and the weakened rod body, which reduces the carrying capacity of the rod body. We establish grouting bolt model by applying the finite element software Abaqus, and analyze the mechanic performance of grouting bolt, systematically research the influence of bolt structure parameters including wall thickness of rod body, the number of grouting hole, grouting hole spacing on the mechanical property of grouting bolt. The results show that the wall thickness directly influences the bearing capacity of the rod body, the greater of the wall thickness, the bolt can bear larger load; under the condition of the same wall thickness, the number of grouting hole plays a leading factor, hole spacing takes second place.