The invention discloses a stadium ultra-large-span hub type double-layer cable structure and a mounting method thereof. The stadium is composed of a
steel frame structure, a roof
cable net structure and an outer pressing ring horizontal truss, wherein the width of the outer pressing ring horizontal truss is 12-13 m, the outer pressing ring horizontal truss is supported on inner ring vertical steelpipe columns, A-shaped steel
pipe columns and outer ring inclined steel
pipe columns, the specification of a horizontal pressed truss inner chord is P1600 * 50 mm, the specification of a horizontal pressed truss outer chord is P1200 * 32 mm, the inner ring
steel columns are hinged and supported at the tops of concrete stand columns, and the outer ring
steel columns are hinged and supported on a 6m elevation concrete structure. By the adoption of the hub type design, long materials and short materials obtained after steel components are
cut are utilized to the maximum extent, particularly, the project adopts a structural design Ansys and Revit data fusion technology, the whole process from design to construction is controlled, strict measurement, calculation and control are realized, industrialized production is realized, the length is fixed, so that the measure cost in general similar
engineering total cost is greatly reduced, and the cost of labor, materials and the like is saved.