PROBLEM TO BE SOLVED: To provide a medicine packaging device which writes information on a recording medium provided in a core tube that is mounted to a roll support part for supporting a medicine packaging paper roll.SOLUTION: A medicine packaging device 1 for packaging a medicine by one dose by using a medicine packaging paper roll 200 comprises: a roll support part 2 to which a core tube 201 of the medicine packaging paper roll 200 is mounted; a print packaging unit 4 for packaging the medicine by one dose by using medicine packaging paper supplied from the medicine packaging paper roll 200 in which the core tube 201 is mounted to the roll support part 2; and a wireless reader-writer 26 for writing information on a core tube IC tag 202 provided in the core tube 201 mounted to the roll support part 2. The wireless reader-writer 26 writes the information of the medicine packaging device 1.SELECTED DRAWING: Figure 10【課題】薬剤分包紙ロールを支持するロール支持部に装着された芯管に設けられた記録媒体に情報を書き込む薬剤分包装置を提供する。【解決手段】薬剤分包紙ロール200を用いて薬剤を1包分ずつ包装する薬剤分包装置1において、上記薬剤分包紙ロール200の芯管201が装着されるロール支持部2と、上記ロール支持部2に芯管201が装着された薬剤分包紙ロール200から供給される薬剤分包紙を用いて薬剤を1包分ずつ包装する印字包装ユニット4と、上記ロール支持部2に装着された芯管201に設けられた芯管ICタグ202に情報を書き込む無線リーダライタ26とを備え、上記無線リーダライタ26は、当該薬剤分包装置1の情報を書き込む。【選択図】図10