The structure adopts the spatial structure system of the mesh shell, and the cross-section of the mesh frame member should be calculated and determined according to the strength and stability. In order to reduce the calculated length of the pressure rod and increase its stability, measures such as adding auxiliary rods and support rods can be used. The node forms of steel plate mesh and double shell mesh mainly include cross plate nodes, welded hollow ball nodes and bolt ball nodes. The cross plate node is suitable for reinforced mesh frame structure. The connection between the tie rod and the node board is welded or bolted with high strength.