The utility model belongs to the technical field of building system, concretely relates to steel mesh frame factory building capital node. The support column capital of factory building be provided with the bolt ball, the bolt ball on set up a plurality of screws of being connected with supporting beam, bolt ball lower extreme is fixed with the backup pad, backup pad and support column capital between be provided with arc pedestal, the arc pedestal lower extreme fix at the support column capital, the sphere groove of undercut in the middle of its up end is provided with, backup pad lower extreme slidable ground is connected in the sphere inslot. The utility model discloses simple structure, construction and installation is convenient, the security performance is high, through sliding structure can be fine eliminate water straight snips shear force to the influence of support column with concrete column, good anti -seismic performance has, the later stage maintenance is simple and convenient, swift, has very big spreading value.