To provide a portable footrest excellent in portability and housability, light in weight and capable of being folded compactly at the time of carrying or housing it.

This portable footrest 70 is formed of fiber reinforced plastic by considering weight reduction, durability and productivity in addition. The footrest 70 is effective for reducing tiredness since a top plate 71 makes a prescribed slope by leg members 80a and 80b at the time of using it. In addition, at top plate members 71a and 71b, belts 90a and 90b are respectively strung at slits 74 by considering a sanitary aspect and a using feeling. In addition, an antislipping matter 84 is connected to the parts of the members 80a and 80b in contact with a floor surface with adhesive, etc., to prevent the footrest 70 from moving. The footrest 70 can easily be carried by housing in the side pocket of a vehicle or housing in a traveling bag, a briefcase, etc., since the footrest 70 can be folded to be the size of the members 71a and 71b which are respectively a half of the plate 71 in size.