Insulation construction method for cantilever beam in alpine region

The invention relates to the technical field of building structure engineering, in particular to an alpine region suspended pouring beam heat preservation construction method. A first heat preservation layer is arranged on one side of a formwork to be used through a first heat preservation material, and at least one heat preservation assembly fixed to the formwork is arranged on the first heat preservation layer; arranging a second thermal insulation layer on the first thermal insulation layer by adopting a thermal insulation material which is the same as that of the first thermal insulation layer to obtain thermal insulation template structures, enclosing at least four thermal insulation template structures on the periphery of the to-be-poured suspended pouring beam to form a suspended pouring beam pouring space, and preheating the suspended pouring beam pouring space at the same time, and enabling the pouring space of the suspended pouring beam to reach the target temperature, and carrying out pouring const