PROBLEM TO BE SOLVED: To make a weighed result to a suitable one according to a form of a medicine.SOLUTION: The medicine-weighing device includes: a device body 1 integrally provided with: a weighing member 2 for weighing the medicine to be prepared, a displaying member 3 for displaying the weighed value weighed at least by the weighing member 2, an inputting member 3 for inputting a number of tablets when the medicine to be prepared is a tablet and a controlling member 5 for controlling at least the displaying member 3 and a storing member attachable to and detachable from the device body 1 for storing a medicine master in which medicine data on the medicine to be prepared are stored. When the medicine to be prepared is the tablet, by inputting the number of tablets through the inputting member 3, the controlling member 5 lets the medicine master of the storing member store the weight per one medicine obtained by dividing the weighed value by the number.COPYRIGHT: (C)2011,JPO&INPIT【課題】秤量結果を薬品の形態に応じた適切なものとする。【解決手段】調剤対象薬品を秤量するための秤量部材2、少なくとも秤量部材2で秤量された秤量値を表示する表示部材3、調剤対象薬品が錠剤である場合に錠数を入力するための入力部材3、及び、少なくとも表示部材3を制御する制御部材5を一体的に設けてなる装置本体1と、調剤対象薬品に関する薬品データが格納される薬品マスタを記憶する、装置本体1に着脱可能な記憶部材とを備える。制御部材5は、調剤対象薬品が錠剤である場合、入力部材3により錠数が入力されることにより、記憶部材の薬品マスタに、秤量値を個数で除算して得られた薬品1個当たりの重量を記憶させる。【選択図】図1