The container-type prefabricated bin is an important embodiment of the new technology, new materials and new equipment applied in the intelligent substation. It is composed of prefabricated cabin, secondary equipment panel cabinet (or rack), cabin auxiliary facilities, etc. It completes the production, assembly, wiring, commissioning and other work in the factory, and is transported to the project site as a whole, on the basis of installation. The prefabricated cabin and its internal secondary equipment realize the integration of the whole set of secondary equipment by the manufacturer, realize the factory processing, reduce the on-site secondary wiring, reduce the design, construction, commissioning and workload, simplify the repair and maintenance work, and shorten the construction period. The wall panel of the prefabricated cabin is made of double-layer steel plate with built-in fireproof materials, which can withstand fire for more than three hours. The prefabricated cabin has high structural strength, good fire and thermal insulation performance, good corrosion resistance, and its service life can reach the level of more than 30 years.