PURPOSE:To suppress the generation of NOx with an increased effect and reduce the discharged unburned portion by providing a first nozzle for ejecting pulverized coal and burning it at an excess air factor of over 1 and a second nozzle surrounding the first nozzle and for ejecting pulverized coal and burning it. CONSTITUTION:A pulverized-coal burner comprises nozzles 12, 13 for pulverized coal, a secondary air nozzle 17, a tertiary air nozzle 18, and an igniter 16. By ejection of a greater proportion of pulverized coal for fuel from the pulverized-coal nozzle 12 and secondary air and tertiary air from the secondary air nozzle 17 and the tertiary air nozzle 18 respectively, a primary combustion region 21 with an excess air factor of over 1 is formed at the tip of the burner. The pulverized coal nozzle 13 is formed along the outer periphery of the tertiary air nozzle 18; from this nozzle 13, a fuel mixture whose oxygen content is adjusted to a concentration of 3-5% by volume and composed of discharged gas from the combustion, air, and pulverized coal is ejected so that around the primary combustion region 21 there are formed a secondary combustion region 22 and for oxidation of products of reductive thermal decomposition generated at the combustion region 22 and for reduction of NOx generated at the combustion region 21 a tertiary combustion region 23.