To disclose a passive vehicle cabin insulation method with constant temperature and ultra-low energy consumption.SOLUTION: High performance insulation layer, high airtight enclosure, vacuum multilayer film laminated glass window with temperature barrier, UV cut insulation coating film, high performance ventilation heat recovery system, insulation bridge structure, anti-smog air purification system are provide on each section of a vehicle. A passive vehicle cabin insulation method with constant temperature and ultra-low energy consumption of the present invention effectively solves the problem that the interior of the car is hot in summer and the interior of the car is cold in winter, so that the use of passive renewable energy is maximized, a constant temperature, constant humidity, constant oxygen, cleanliness and low noise are realized, and a healthy and comfortable driving environment can be maintained with minimal energy consumption.SELECTED DRAWING: Figure 1
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