Disclosed is an apparatus for supplying packing paper, capable of supplying a packing paper roll to a packing unit of an automatic medicine packing apparatus by simultaneously receiving a plurality of packing paper rolls and sequentially linking the packing paper rolls to each other. The apparatus includes a plurality of packing paper roll mounting units to rotatably mount a plurality of packing paper rolls therein, a guiding roller to guide packing papers released from the packing paper rolls mounted in the packing paper roll mounting units to supply the packing papers to a packing unit, a sensor to detect whether the packing paper roll is completely consumed or not, and a packing paper bonding unit to bond a distal end of packing paper from one packing paper roll, which is completely consumed, with a front end of packing paper from a new packing paper roll when the one packing paper roll is completely consumed among the packing paper rolls.