To sufficiently provided a resistance to either a positive or a negative atmospheric pressure for an air inflated house by solving such a problem that a wind resistance is low, particularly, a shape cannot be held when the house receives a negative atmospheric pressure produced when a strong wind blows.

In this air inflated house formed by providing a tent covering the entire top surface part and four side surface parts of an arch-like expanding frame formed of an inflation air chamber, the tent comprises a large number of vent holes drilled in a left side surface part, a right side surface part, a front side surface part, and a rear side surface part at any positions. A bellows extending tube with a mesh bag connected at the tip thereof is connected to the vent ports on the inside o the tent. A flap covering each vent port is installed on the outside of the tent in the state that an opening in elevation angle direction is provided between the flap and the tent and in the shape of a shed roof.