Abstract: Blast furnace gas ash is a kind of secondary utilization resource with large output, much iron, carbon and highly recycling value.In order to study the effect of temperature on the sintering of Zn-bearing blast furnace gas ash, the phase change, microstructure change and the change of elemental content of blast furnace gas ash in a iron and steel plant of Shanxi during sintering at different temperatures were studied by means of ICP, DTA-TG, XRD, SEM-EDS and other means.The results show that iron element and zinc element in the blast furnace gas ash are mainly concentrated in the fine particles, carbon element is mainly concentrated in large particles; with the increase of sintering temperature, some unstable amorphous materials in blast furnace gas ash decrease, and the proportion of stable silicate substances increases; particles become larger, there is a clear trend of agglomeration; iron element content increases, zinc content increases first and then decreases to 0.5%.After the carbon element content drops sharply to 8.4%, the decrease becomes slow.This research has certain theoretical significance for the efficient utilization of blast furnace gas ash.