Since traditional CFRP plate anchors are prone to slippage and splitting, and the pre-tightening force provided by bolts is difficult to control, the structure of traditional anchors needs to be improved. With theoretical analysis of the force mechanism of the new anchorage, the paper provides a theoretical basis for the structural size design of the new anchorage. The finite element software is used to simulate the force of CFRP plate anchors under different parameters, and the design size parameters of the anchors are obtained for experimental research. The research results show that when the lateral displacement of the splint is 0.65mm, the maximum anchoring efficiency of the anchor is 89.37%, and the CFRP plate is explosively destroyed. The research also demonstrates that the inner curved design of the anchor splint can effectively control the pre-tightening force by adjusting the displacement of the splint , enhancing the extrusion effect.