In order to solve such problems as low-cost and large-scale consumption of the waste rock in lead-zinc mines, based on the sinter pot test, research on substitution of the waste rock in lead-zinc mines for dolomite in the iron ore sintering process is carried out, focusing on the waste rock in a high calcium-magnesium type lead-zinc mine in Guangxi, and the effects of the waste rock in lead-zinc mines on sinter production and quality and SO₂ and NO_x gaseous pollutant emission are analyzed. The results show that the main phase of the waste rock in high calcium-magnesium type lead-zinc mine used in the experiment is dolomite, which contains a small amount of fine-grained quartz, pyrite and sphalerite, and the chemical composition of the rock is close to that of ordinary dolomite for sintering. When the proportion of the waste rock replacing ordinary dolomite is not higher than 40%, there is no obvious adverse effect on the sintering process and sinter quality, and such harmful elements as Zn and S brought in by the waste rock in lead-zinc mine are effectively removed. The results will provide new ideas for the large-scale consumption and low-cost and efficient utilization of the waste rock in high calcium-magnesium type lead-zinc mines.