Building structure system

The utility model relates to the technical field of buildings, and provides a building structure system, which comprises a main structure for bearing lateral force and vertical load of a secondary structure, and the secondary structure for realizing building functions, the main structure comprises a plurality of large-space layer structures which are arranged in a stacked mode. the large space layer structure comprises a plurality of large columns, a plurality of large beams arranged between every two adjacent large columns and a floor system arranged at the top ends of the multiple large columns, the multiple large columns, the multiple large beams and the floor system form a space for containing the secondary structure, and the large columns, the large beams and the floor system are manufactured in a prefabricated mode and then assembled; the secondary structure comprises a plurality of stress components and a plurality of enclosure components arranged between every two adjacent stress components, the multi