The utility model belongs to the technical field of grinding tools, and particularly relates to a non-woven fabric grinding brush, which comprises a roller inner pipe, a non-woven fabric hair layer coated on the surface of the roller inner pipe and normal-temperature foaming glycidyl resin foam filled in pores of the non-woven fabric hair layer, and is simple in structure, low in manufacturing cost and suitable for batch production. In addition, the polishing brush has the advantages of being durable, safe and environmentally friendly. In addition, after the polishing brush is adhered with glue, the fiber hardness is high, and the polishing brush can be used for removing PCB hole plugging resin.