Disclosed is a set of containers each having a container body and a cap body the cap body is removably covering and selectively closing an upper opening of the container body one outer wall surface of the cap body is formed with a mark, whereby when people gather in a particular place and are served with the same drinks, the mark on the cap body of each container can be used to identify which container contains drinks belonging to each individual a person on medication can also use the mark on the cap body of the container to identify which container holds the medication to be taken by the person.一種容器組, 其每一容器具有一容器本體與一蓋體,該蓋體係可拆卸地蓋設並選擇性地封閉該容器本體之一上開口,該蓋體之一外壁面上形成有一標記。藉此,當人們聚集在某一地點並被供以相同飲料時,可藉由各容器之蓋體上的標記來辨識哪一容器內裝有屬於自己的飲料;一服藥者也可藉由各容器之蓋體上的標記來辨識哪一容器內裝設有其需要服用之藥物。10A‧‧‧容器11A‧‧‧容器本體12A‧‧‧蓋體120A‧‧‧端面121A‧‧‧標記