<;P>;PROBLEM TO BE SOLVED: To provide a mounting structure which can rationalize mounting work and the shortening of a working time when a cylindrical gabion formed of a strip-shaped body of a synthetic resin such as FRP is fixed in a predetermined position of an underwater structure such as an artificial fish bank. <;P>;SOLUTION: One sandwiching member 10 formed in an L-shape is applied from an inner peripheral side in a state that its long side straddles along an axial direction from an outer peripheral edge side of an annular strip body 4 to an inner peripheral edge side in at least three places of the annular strip body 4 connected to an upper end of a spiral strip body 5 of a gabion body 3. The other sandwiching member 14 like a flat plate is applied from the outer peripheral side of the annular strip body 4 in such a manner that a through-hole agrees with that of the one sandwiching member 10, and fixed by being tightened in a position across the annular strip body 4 by means of a bolt 16 and a nut 17. Additionally, a thin rubber plate 18 is provided between the annular strip body 4 and the sandwiching members 10 and 14, and fixed to the artificial fish bank etc. via the metal plate 19 which is welded to the short side of the one sandwiching member 10. <;P>;COPYRIGHT: (C)2011,JPO&INPIT