Construction method of cavity prefabricated wall free of outer frame matching

The invention provides a cavity prefabricated wall construction method free of outer frame matching, and solves the problems that when an existing high-rise building wall is constructed, a scaffold needs to be built on the outer side of the wall, the engineering cost is high, workers need to conduct suspended operation on the scaffold, and potential safety hazards are large. The prefabricated hollow sandwich wall is adopted for assembly, so that on-site wet operation is reduced, and the building assembly rate is increased; a cast-in-place section between two sections of sandwich wall bodies adopts an externally-hung internally-pulled template system, so that a worker can finish the installation and reinforcement of a template in a floor, the construction operation outside the floor is avoided, the problem that the worker constructs on the outer side of the floor is effectively solved, the potential safety hazard of construction is reduced, meanwhile, the erection of an external-protection-free operation frame