【Objective】To study the reinforcement effect of steel plate thickness and anchor strength on the joint of shield tunnel.【Method】Using ABAQUS finite element software, establish left and right half standard block pipe joint models with an inner diameter of 5.4m and an outer diameter of 6m. Based on a load structure calculation model, study the mechanical properties of steel plate adhesive reinforced subway tunnel pipe joint. 【Result】The research results indicate that the mechanical properties of reinforced pipe joints are influenced by three aspects: concrete matrix, steel plate, and anchor bolt. The bending stiffness of steel plate reinforced joints is significantly improved. A 10mm steel plate can increase the joint stiffness by 40%. When the thickness of the steel plate is 20mm-30mm, the bending moment of the structure continuously increases under external loads. In the later stage, structural damage mainly concentrates on the joint surface, near the handhole, and below the loading point. A steel plate thickness exceeding 20mm does not cause significant changes in the structural damage mode. The stress of the steel plate is concentrated at the support far away from the joint surface, proving that the steel plate can fully exert the stress advantage of the composite structure under this thickness. 【Conclusion】When the number of anchor bolts is fixed, increasing the diameter can effectively improve the collaborative stress of the reinforced pipe joint. Due to the limitation of concrete strength in the compressed area of the joint, the stiffness increases of the joint decreases with the increase of steel plate thickness. The optimal thickness is 10-20mm steel plate; An anchor bolt diameter greater than M16 ensures effective connection between structures.