A spatial structure composed of multiple rods connected by nodes in a certain grid form. It has the advantages of space force, light weight, large stiffness, good seismic performance, etc. It can be used as the roof of gymnasium, theater, exhibition hall, waiting hall, stadium stand awning, aircraft hangar, two-way large column grid structure and workshop and other buildings. The disadvantage is that the number of bars on the node is large and the fabrication and installation is more complex than the plane structure.