(Problem) An optional drug cassette can be mounted even in a cassette mounting portion to which a predetermined drug cassette is attached or detached. (Solution) If it is determined by the control means (7) that the default medicine cassette (16A) is mounted on the cassette mounting portion (15) at the default position of the apparatus main body (2), the storage is stored in the first storage means (18). It is determined whether or not the predetermined medicine cassette (16A) is attached at an appropriate position based on the attached attachment information and the position information of the cassette attaching portion (15) to which the prescribed medicine cassette (16A) is attached. . On the other hand, if it is determined by the control means (7) that an arbitrary medicine cassette is attached to any of the cassette attaching portions (15), the medicine-related information stored in the first storage means (18) of the attached predetermined medicine cassette The information is stored in the second storage means (32) in association with the mounting destination information or the position information of the cassette mounting portion. [Selection] Figure 1（課題）既定薬剤カセットが着脱されるカセット装着部であっても、任意薬剤カセットを装着可能とする。（解決手段）制御手段（７）により、装置本体（２）の既定位置のカセット装着部（１５）に既定薬剤カセット（１６Ａ）が装着されたと判定すれば、第１記憶手段（１８）に記憶した装着先情報と、規定薬剤カセット（１６Ａ）が装着されたカセット装着部（１５）の位置情報とに基づいて、既定薬剤カセット（１６Ａ）が適切な位置に装着されているか否かを判定する。一方、制御手段（７）により、いずれかのカセット装着部（１５）に任意薬剤カセットが装着されたと判定すれば、装着された既定薬剤カセットの第１記憶手段に（１８）記憶された薬剤関連情報を、装着先情報又はカセット装着部の位置情報と関連付けて第２記憶手段（３２）に記憶させる。【選択図】図１
