PURPOSE: To provide a fire shutter which shuts out the convection of the air and has the function to prevent a spreading of fire when a fire breaks out, and does not confine a person when he is left in the fire breaking out section, making him pass through the fire shutter and escape, and furthermore, can be housed in a small case by making it in the foldable type, can be installed simply and at a low cost, and can be set at the inner side or the outer side of a normal house and the like simply.

CONSTITUTION: A housing case (4) at the upper part is installed on the ceiling or under the eaves on the upper side of a window, and a weight (2) is installed on the lower side of plural sheets of superposed fire curtains (1). When the fire shutter is not used, the fire curtains (4) and the weight (2) are housed in the housing case (4), and when it is used, stoppers (5) are removed, and the fire curtains (1) are opened by the weight of the weight (2). Furthermore, when the fire shutter is housed, it can be housed automatically or manually, by using a wire (8) provided from the upper side to the lower side.