The invention discloses an emission reducing system for removing sintering flue gas fine particles based on pulse discharge, and belongs to the technical field of pollutant removal in the sintering process. The emission reducing system comprises a flue gas pipe and a removing device; the flue gas pipe is connected with an air bellows at the lower part of a sintering trolley; the removing device is arranged on the flue gas pipe; the removing device is used for removing fine particles in flue gas; the removing device includes a pulse charge unit, an agglomeration unit and a capturing unit; the pulse charge unit enables the particles to carry charges through pulse charge; the agglomeration unit sprays an agglomerating agent in the flue gas to agglomerate the electrified particles; and the capturing unit is used for capturing the agglomerated particles. The fine particles are made to carry the charges through pulse coronas; and the agglomeration unit sprays the charge-carried agglomerating agent to reinforce the agglomeration effect of the particles, so that the agglomeration removing efficiency of the fine particles is improved, and the fine particles in the flue gas are effectively reduced.