The utility model relates to an energy-saving factory building, which comprises an infrastructure extending upward from the ground and surrounding a basic space.The foundation space has an indoor area defined by the inner circumference of the infrastructure, at least a first drainage port formed in the infrastructure and connected with the indoor area, and a heat dissipation port and a second drainage port defined by the infrastructure and connected with the indoor area.The feature of the energy-saving building is that the position of the heat sink is higher than the first drain and the second drain. The hot air in the indoor area will flow to the heat sink, and at the same time, the first drain, the second drain, or the existing gate for personnel access will supply cold air, so as to achieve the effect of natural gas circulation.一種節能廠舍，包含一由地面向上延伸並圍繞出一基礎空間的基礎結構。該基礎空間具有一由該基礎結構之內周面界定出的室內區域、至少一形成於該基礎結構，並與該室內區域相連通的第一引流口，及由該基礎結構界定出，並與該室內區域相連通的一散熱口與一第二引流口。該節能廠舍的特徵在於，該散熱口的位置是高於該至少一第一引流口與該第二引流口，於是在該室內區域的熱氣將匯流至該散熱口而流出，並同時由該第一引流口、該第二引流口，或是由既有供人員出入的大門補入冷空氣，藉此達到氣體自然循環的效果。
