Abstract: Catalysts for treating acid gases and halogen gases and the production methods thereof. The acid and halogen gases include HCl, HF, HBr, HI, F2, Cl2, Br2, I2, ClF3, PH3, PCl3, PCl5, POCl3, P2O5, AsH3, SiH4, SiF4, SiCl4, SiHCl3, SiH2Cl2, BF3, BCl3, GeCl4, GeH4, NO, NO2, SO2, SO3 and SF6, etc. The catalysts comprise one or more carrier materials selected from activated carbon, argil, diatomite, cement, silica and ceramic materials; and one or more metal compounds selected from: alkali metal hydroxides, oxides, carbonates and bicarbonates, alkaline earth metal hydroxides, oxides, carbonates and bicarbonates, Group IIIA metal oxides, Group IVA metal oxides, and transition metal oxides, oxide hydrates, sulfates and carbonates.