The invention discloses an oxygen-enrichment multiple-flame rotational flow pulverized coal burner, and relates to the technical field of clean energy combustion. The problems that an existing rotational flow pulverized coal burner difficultly meets efficient low-NOx combustion of fault coal particularly flame retardant coal, and the coal type and the coal quality are poor in adaptation are solved. The primary air pulverized coal air flow is concentrated through a conical inner and outer concentrator and is reformed into thin, thick and thin concentric annular distribution from outside to inside, multiple splitting flames are formed nearby the position, corresponding to the downstream portion of a primary air pipeline, of the inner side of the center backflow area outer boundary layer, theconcentrated pulverized coal airflow ring is ignited, then, the flames are rapidly diffused to the downstream portion and the outer side, meanwhile, the flames are subjected to in-time cooling, gasifying and burning out through dual regulation secondary air sprayed in a graded manner, generation of NOx is avoided, and the three concentric-distribution pulverized coal airflow rings are sufficiently combusted. The burner is mainly used for efficient low-NOx pulverized coal combustion of the fault coal and particularly fire retardant coal and mixed coal.