The invention provides a method for reducing emission of flue gas pollutants in a sintering process. The method comprises the following steps: step one, measuring and taking water and quick lime, adding water into the quick lime, slaking the quick lime to obtain slaked lime, adding coked wastewater into the slaked lime, mixing and wetting; step two, mixing and wetting the slaked lime with the coked wastewater, then pelletizing, continuing to dropwise adding the coked wastewater in the pelletizing process, adjusting a pelletizing device and pelletizing the slaked lime; step three, conveying pelletized pellets into a sintering machine pellet distributing opening by using a material conveying belt; step four, distributing the material on the sintering machine; and step five, carrying out sintering treatment by igniting on the sintering machine after finishing distributing the material on the sintering machine, and completing sintering in the sintering machine. The facilities used by the method are simple; the existing sintering machine does not need to be greatly changed; the emission of the sintering flue gas is reduced while the coked wastewater can be consumed; the method can be used as the beneficial complement of the existing sintering flue gas treatment process; the burden of treatment at the end of sintering can be reduced.