The present invention provides an automatic powdery medicine preparation apparatus for automatically measuring the mass of one prescription for an arbitrary medicine and putting it in a container for preparation. A powder storage container capable of storing a powder medicine therein and discharging the powder from an outlet, a powder measurement cup capable of storing a measured powder, and a powder container capable of mounting a plurality of powder storage containers and / or measurement cups. A shelf 700, a first powdered medicine measuring cup accumulating unit 1200 capable of holding one or more measuring cups, an internal container transferring unit 800 capable of transferring a powdered medicine container and / or a powdered medicine measuring cup housed in a powdered medicine container shelf; A powder discharge container 200 that holds the powder storage container transferred by the container transfer unit and discharges the powder from the powder storage container, and a powder measurement cup, that measures the powder discharged from the powder discharge unit, And a first external container transfer unit 1100 for transferring the powdered measuring cup between the internal container transferring unit and the first powdered measuring cup stacking unit. To. [Selection diagram] Fig. 1【課題】任意の薬剤について1処方分の質量分を自動的に計量して容器に入れて準備する散薬自動計量準備装置を提供する。【解決手段】散薬を内部に収容し、出口から散薬を排出できる散薬収容容器と、計量済みの散薬を収容できる散薬計量カップと、散薬収容容器及び/又は計量カップを複数個載置できる散薬容器棚700と、計量カップを1つ以上保持できる第1の散薬計量カップ集積部1200と、散薬容器棚に収容された散薬収容容器及び/又は散薬計量カップを移送できる内部容器移送部800と、内部容器移送部によって移送される散薬収容容器を保持し、散薬収容容器から散薬を放出する散薬放出部200と、散薬計量カップを保持し、散薬放出部から放出される散薬を計量し、散薬計量カップに受領させる散薬計量部400と、内部容器移送部と第1の散薬計量カップ集積部との間で散薬計量カップを移送する第1の外部容器移送部1100とを有する。【選択図】図1