PURPOSE: A drug storage device and an iridescent color date indication method are provided to enable a user to easily memorize a dosage date color and dosage date.CONSTITUTION: A drug storage device comprises accommodating chambers(51) which are partitioned into each section. One color is marked in each accommodating chamber to designate a day in the accommodating chambers. Days are successively indicated with different colors. When two or more accommodating chambers exist in a day, the same color with different brightness is indicated.COPYRIGHT KIPO 2013[Reference numerals] (AA) Red (BB) Orange (CC) Yellow (DD) Green (EE) Blue (FF) Deep blue (GG) Violet (HH) Sunday (II) Monday (JJ) Tuesday (KK) Wednesday (LL) Thursday (MM) Friday (NN) Saturday본 발명은 연속적으로 약 들어 있는 약봉지나 약통들을 이용하여 약 복용자가 약을 복용하는 경우 약의 복용여부를 용이하게 체크할 수 있도록 각각의 약봉지나 약통들에 무지개 색상으로 이루어진 요일표식을 표시하도록 하는 것이다.
