Abstract: Fe-ZlF-8, a kind of zeolitic imidazolate metal-organic frameworks, was prepared with ZIF-8precursors and FeSO,· 7H, as iron source. This work studied on methyl orange waste water treatmentthrough Fe-ZIF-8. The effects of Fe-ZIF-8 dosage, H value , reaction temperature and time on the ad.sorption of methyl orange were studied. The results showed that Fe-ZIF-8 is suitable for use at room tem-perature, which can effectively reduce the energy consumption in the treatment process. The adsorptionrate for 50 mL 20 mg/L ( mass concentration) methyl orangesolution could reach 92. 8% under the opti-mal conditions of 0.06 g Fe-ZIF-8  H 7，25 C and 60 min.