Head protecting airbag device

A head protecting airbag device comprises an airbag (12) folded and housed above the upper edge of a window on the interior side. The airbag (12) includes an airbag body (13) and a current regulating cloth (35). The airbag body includes: an inflation shielding portion (19); a gas feed passage portion (16) arranged in the longitudinal direction of the vehicle above the upper edge of the inflation shielding portion; and one gas inlet port (17) protruded upward from a portion of the gas feed passage portion removed from the front end and the rear end. The current regulating cloth includes an inlet side portion (37) and an outlet side portion (38). The outlet side portion includes first (39) and second (40) gas outlet holes capable of releasing the inflating gas from the inflator to the front and the rear along the gas feed passage portion.