AbstractIncineration is an effective means of solid waste disposal, but the acidic components in the complex flue gas generated by incineration put pressure on the dust removal, which also puts higher requirements on the corrosion resistance of the filter media. In this work, aiming at the gas–solid corrosion characteristics of 316L alloy fiber filter bag, the corrosion behavior of 316L alloy fiber filter materials in halogen hydride atmosphere was studied using fixed‐bed simulation corrosion experiments, and the mechanical properties of the filter materials after corrosion were analyzed. For the 316L alloy fiber filter bag, the influence of flue gas composition (O2 and H2O) and its concentration on the corrosion characteristics was explored. The corrosion mechanism was studied by combining the microscopic morphology and element distribution of the filter material before and after corrosion. The results show that halogen hydride has a significant corrosive effect on 316L alloy filter material, especially the catastrophic damage of 316L alloy fiber filter material in oxygen‐containing atmosphere. The addition of H2O has an obvious inhibitory effect on the reaction. Due to the circulation of the corrosive gas source, the mechanical properties of the 316L alloy fiber filter material were severely damaged and the tensile strength was greatly reduced.