This paper reports Hf isotope and REE composition of zircons from metamorphic rocks in the Daqing Mountains, Inner Mongolia. Detrital zircons from two meta-sedimentary rock samples have n(176Hf)/n(177Hf)c, tDM1(Hf) and tDM2(Hf) ranging from 0.281079～0.281502, 2548～3000 Ma and 2612～3153 Ma and from 0.280916～0.281451, 2533～2717 Ma and 2600～3404 Ma, respectively. The εHf(t) and tDM1(Hf) of magmatic zircon from one meta-gabbro sample range from－5.45～6.68 and 2319～2647 Ma, respectively. These indicate that late Neoarhcaean-early Palaeoproterozoic tectono-magmatic events occurred in the Daqing Mountains and adjacent areas, with both mantle addition and crustal recycling. Metamorphic zircon rims commonly show young tDM2 (Hf) when comparing with detrital and magmatic zircon cores, suggesting that Lu-Hf compositions of the rocks and minerals were changed during metamorphic processes. Metamorphic zircon rims are similar in REE pattern to adjacent detrital and magmatic cores, but commonly being lower in total REE content. Most of the metamorphic rims are smaller than 0.1 in Th/U ratio, being quite different from the cores which Th/U ratios are generally higher than 0.5. It is speculated that metamorphic fluid was high in n(176Hf)/n(177Hf）ratio and U and low in Th and REE and played an important role in metamorphic zircon formation.