The utility model provides a novel stopping block of a brown coal swirling burner. At present, the brown coal swirling burner applied to a power station boiler has the problems of serious coking, high emission of nitrogen oxides and so on. The novel stopping block of the brown coal swirling burner comprises an elbow (1) bent to 90 degrees; a crescent-shaped stopping block (2) is arranged on the elbow bent to 90 degrees; a wear resistant ceramic layer (5) is arranged in the elbow; ports (3) are formed at the two ends of the elbow; and the ports are connected with flanges (5). The novel stopping block of the brown coal swirling burner, provided by the utility model, is used for the brown coal swirling burners of the power station boilers.