Disclosed are a passive ultra-low energy-consumption building and a method for manufacturing enclosing structure substrate. The building comprises a light steel earthquake-resistant structure and an ultra-low energy-consumption enclosing structure. The ultra-low energy-consumption enclosing structure comprises an enclosing structure substrate and a left junction component and a right junction component of the enclosing structure substrate. An upper and a lower concave and convex contact (3-3, 4-3) are arranged at two ends of the enclosing structure substrate. An upper enclosing structure substrate and a lower enclosing structure substrate are connected by the upper and lower concave and convex contacts (3-3, 4-3). A left enclosing structure substrate and a right enclosing structure substrate are connected by the left junction component and the right junction component. The ultra-low energy-consumption enclosing structure is fixed to the light steel earthquake-resistant structure by screws. The method for manufacturing enclosing structure substrate comprises: producing a hollow lining cavity polymer material layer (3-2, 4-2) and a nanometer fireproof inorganic material layer (3-1, 4-1) respectively; and combining the two layers to form an enclosing structure substrate. The building has low energy consumption, and is green and environmental protection.
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