The present invention discloses a portable first aid splint.A portable first aid splint according to the present invention includes: an inflated sheet which is provided to surround an affected part of an arm or a leg of a body and is inflated by a fluid supplied through an injector to press the affected part And a fastening member provided on the cutout portion for fastening the fastening member to the fastening member, the fastening member being provided with a fastening member provided on the cutout, frame And a new and retractable housing which is provided on the outside of the inflated sheet and is capable of deforming in an axial direction, which is formed as a tubular shape as a whole by connecting the front and rear frames to each other.The portable first aid splint of the present invention having such a configuration is lightweight and has a simple structure and is simple and can be quickly and accurately treated in an emergency without the help of a professional medical staff or emergency rescue personnel. As the first aid treatment of the body parts is possible, it is expected to have a useful effect of enhancing the satisfaction and competitiveness of the product.In addition, since the portable first aid splints of the present invention are provided in a closed form when the support cover, which is an exoskeleton element that can accommodate an expandable sheet therein, can be retracted, the inner expandable sheet is not exposed to the outside, It is possible to safely store the inflated sheets without damaging the inflated sheets without using the inflated sheets. In addition, when the inflated sheets are expanded, the inflated sheets are damaged due to surrounding objects or objects in the wearing state, And thus it is possible to maintain a stable treatment state.In addition, since the portable first aid splint of the present invention has a simple structure and can change the diameter, it is possible to perform stable and stable treatment regardless o
