The invention discloses a pulverized coal low-NOx and oxygen-enriched combustion device. The pulverized coal low-NOx and oxygen-enriched combustion device comprises a hearth, an oxygen tank, an oxidizing agent nozzle, a central nozzle, a steam nozzle and a steam generator, wherein the central nozzle is mounted on one side of the hearth; the lateral wall of a primary air pipeline is connected with the outlet of the steam generator through a primary steam inlet pipeline; the oxidizing agent nozzle is mounted on the side, with the central nozzle, of the hearth; the outlet of the oxidizing agent nozzle extends into the hearth, the inlet of the oxidizing agent nozzle is connected with a secondary air pipeline, the secondary air pipeline is connected with the primary steam inlet pipeline through a secondary steam inlet pipeline, and the lateral wall of the secondary air pipeline is connected with the oxygen tank through an oxygen inlet pipe; the steam nozzle is mounted on the side, with the central nozzle, of the hearth. The pulverized coal low-NOx and oxygen-enriched combustion device has the advantages steam is added to lower the temperature peak in a furnace, the temperature field distribution in the hearth is allowed to be even, smoke circulating equipment is reduced, constant nitrogen accumulation in smoke circulation is eliminated, NOx emission is lowered, combustion efficiency is increased, and cost is saved.