To provide a burner for flame-retardant materials which burns flame- retardant materials and does not generate soot, bad smell and the like.

A burner for flame-retardant materials comprises a columnar regenerative body 20 which is rotatably supported in a main body 5 with a number of through-holes 26 formed therein, a combusting means for supplying combustion gas to a position at an entrance end of the body 20, which is deviated from the rotational center to a centrifugal direction, and a flame-retardant material supply means for supplying flame-retardant materials to a portion of the end 22 to which the combustion gas has been supplied by rotation, the portion being deviated from the rotational center to a different centrifugal direction. Specifically, as the combustion gas and the flame-retardant material are alternately supplied to the body 20, generation of soot, bad smell and the like is considerably suppressed to ensure combustion of the flame-retardant materials.