A soundproof structure (10, 10a, 10b, 10c, 10d, 10e, 10f, lOg) comprising: two or more resonant type sound absorbing cells including at least one of first resonant type sound absorbing cells and at least one of second resonant type sound absorbing cells (20b, 20c, 20d); and an opening part, which is an opening cell including a frame having an opening, wherein the first resonant type sound absorbing cell includes a first frame which has a first opening and a first film which is fixed around the first opening of the first frame, covers the first opening, and vibrates in a resonance, the second resonant type sound absorbing cell (20b, 20c,20d) has a phase relationship with the first resonant type sound absorbing cell such that transmitted waves of the first and second resonant type sound absorbing cells (20a, 20b, 20c, 20d) cancel each other, the second resonant type sound absorbing cell (20b, 20c, 20d) includes one of (a) a second frame which has a second opening and at least two layers of second films (18b1, 18b2, 18b) which are fixed around the opening of the second frame, cover the second opening, and vibrate in the resonance, or (b) a second frame having a second opening and at least two layers of plates (26a, 26b) which include through-holes (24a, 24b), respectively, the plates being fixed around the second opening of the second frame, or (c) a single-layer plate which has a through-hole and a housing which fixes the single-layer plate and forms a closed space on a rear surface of the single-layer plate, and the opening part is disposed in a position in contact with both of the first and second resonant type sound absorbing cells (20a, 20b, 20c, 20d), or the first and second resonant type sound absorbing cells (20a, 20b, 20c, 20d) are adjacent to each other, and the opening part is disposed in a position adjacent to at least one of the first and second resonant type sound absorbing cells (20a, 20b, 20c, 20d), and resonance frequencies of the first resonant type sound absorbing cells and resonance frequencies of the second resonant type sound absorbing cells match each other. two or more resonant type sound absorbing cells including at least one of first resonant type sound absorbing cells and at least one of second resonant type sound absorbing cells (20b, 20c, 20d); and an opening part, which is an opening cell including a frame having an opening, wherein the first resonant type sound absorbing cell includes a first frame which has a first opening and a first film which is fixed around the first opening of the first frame, covers the first opening, and vibrates in a resonance, the second resonant type sound absorbing cell (20b, 20c,20d) has a phase relationship with the first resonant type sound absorbing cell such that transmitted waves of the first and second resonant type sound absorbing cells (20a, 20b, 20c, 20d) cancel each other, the second resonant type sound absorbing cell (20b, 20c, 20d) includes one of (a) a second frame which has a second opening and at least two layers of second films (18b1, 18b2, 18b) which are fixed around the opening of the second frame, cover the second opening, and vibrate in the resonance, or (b) a second frame having a second opening and at least two layers of plates (26a, 26b) which include through-holes (24a, 24b), respectively, the plates being fixed around the second opening of the second frame, or (c) a single-layer plate which has a through-hole and a housing which fixes the single-layer plate and forms a closed space on a rear surface of the single-layer plate, and (a) a second frame which has a second opening and at least two layers of second films (18b1, 18b2, 18b) which are fixed around the opening of the second frame, cover the second opening, and vibrate in the resonance, or (b) a second frame having a second opening and at least two layers of plates (26a, 26b) which include through-holes (24a, 24b), respectively, the plates being fixed around the second opening of the second frame, or (c) a single-layer plate which has a through-hole and a housing which fixes the single-layer plate and forms a closed space on a rear surface of the single-layer plate, and the opening part is disposed in a position in contact with both of the first and second resonant type sound absorbing cells (20a, 20b, 20c, 20d), or the first and second resonant type sound absorbing cells (20a, 20b, 20c, 20d) are adjacent to each other, and the opening part is disposed in a position adjacent to at least one of the first and second resonant type sound absorbing cells (20a, 20b, 20c, 20d), and resonance frequencies of the first resonant type sound absorbing cells and resonance frequencies of the second resonant type sound absorbing cells match each other.