The invention provides a composite connecting assembly-type building structure. Joints of vertical columns are located between the floors, and sleeving-connection steel pipes are arranged in the vertical columns and connected through steel pipe connecting pieces; vertical column reinforcements are arranged on the peripheries of the sleeving-connection steel pipes; concrete is poured inside and outside the sleeving-connection steel pipes, and in the hoisting process, the ends of the vertical columns, the ends of the sleeving-connection steel pipes and the ends of the vertical column reinforcements are exposed; bracket supports are arranged in the middles of the vertical columns, crossbeams are located on the bracket supports in the middles of the vertical columns, and one or more sets of longitudinal and transverse shear walls are further arranged between the vertical columns; the vertical columns, the crossbeams, the inner layers of the shear walls and the outer layers of the shear walls are prefabricated parts. By adopting the composite connecting assembly-type building structure, the problems that an existing fabricated structure is poor in compressive strength, and stress concentration is likely to be generated can be solved, the problem that a cast-in-situ concrete frame structure is poor in anti-seismic property can also be solved, the anti-seismic property is improved significantly, and the influence on the linear construction period of construction is little.