The present invention discloses a pulverized coal active distributor of a coal fired boiler PM burner. The pulverized coal active distributor of the coal-fired boiler PM burner according to an aspect of the present invention includes a distributor body in which air and pulverized coal are mixed and distributed, and a measuring unit for measuring the concentration of pollutants disposed in the exhaust part and discharged. A corner adjusting membrane fastened to the distributor body, a length adjusting part fastened to the corner adjusting film to vary the length of the corner adjusting film, and contacting the corner adjusting film with the contaminant measured in the measuring part. It includes an angle adjusting unit for adjusting the angle of bending of the corner control film in real time according to the concentration.
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