The invention discloses a paper roll slitting and winding device which comprises an unwinding mechanism, a slitting mechanism, a winding mechanism, a cutting workbench, a sliding rail, a sliding piece, a cutting piece and a glue spraying mechanism, wherein the unwinding mechanism is used for unwinding a paper roll; the slitting mechanism is used for slitting a piece of unwound paper into more than two paper strips; the winding mechanism is used for winding the paper strips to a winding drum; the cutting workbench is arranged at the output end of the winding mechanism; the sliding rail and the sliding piece are arranged above the cutting workbench; the sliding piece is matched with the sliding rail in a sliding manner; the cutting piece and the glue spraying mechanism are arranged on the sliding piece, and the cutting piece is in contact with the cutting workbench; a glue spraying head of the glue spraying mechanism is opposite to the cutting workbench. According to the paper roll slitting and winding device, a worker does not need to cut more than two paper strips with a blade, and no operator needs to coat the paper strips with an adhesive or stick double-faced adhesive tapes to the paper strips. Compared with the prior art, the paper roll slitting and winding device disclosed by the invention has the advantages that the winding working efficiency is improved, the automation degree is high, and the labor cost can be reduced.