The invention relates to a free-of-black-smoke exhaust filter capable of removing oxynitride effectively. The exhaust filter comprises a filter box (1), and a filter screen (2) and a ceramic honeycomb carrier (3) are arranged in the filter box (1); slanting backfins (2.1) and vertical raised impressions (2.2) are arranged on the filter screen (2); and a mist spraying chamber (8) and a selective catalytic reduction converter (9) are further arranged at an exhaust outlet of the filter box (1). According to the free-of-black-smoke exhaust filter capable of removing the oxynitride effectively, through two-stage filtering of the filter screen and the ceramic honeycomb carrier, the exhaust with the main elements of CO, HC, NOx is reacted into CO2, H2O, N2 and O2, and meanwhile, micro holes in partition walls can effectively filter black smoke particles in the exhaust, the black smoke particles can be burned under the effect of catalytic coatings, finally the oxynitride is removed in the selective catalytic reduction converter, and the emitted exhaust can meet the national standard V.