Samples　of　gamma-FeOOH,　gamma-Fe2O3,　and　alpha-Fe2O3　were　prepared　by　calcining　a　gamma-FeOOH　precursor　at　selected　temperatures　and　tested　for　low-temperature　H2S　removal.　The　prepared　materials　were　characterized　by　powder　X-ray　diffraction,　N-2　adsorption-desorption　measurement,　transmission　electron　microscopy,　and　in　situ　Fourier　transform　infrared　spectroscopy　of　pyridine　adsorption.　The　results　suggested　that　the　oxygen　vacancies,　specific　surface　areas,　and　surface　hydroxyl　groups　of　the　iron　oxides　have　significant　influence　on　the　desulfurization　performance　at　room　temperature.　In　H2S　adsorption　experiments,　the　sample　calcined　at　250　degrees　C　(FE-250)　showed　the　highest　performance,　reaching　53%　of　the　maximum　sulfur　capacity,　and　desulfurization　precision　at　25　degrees　C.