Abstract: A container holding device of the invention is used for holding small things and a container. The container holding device includes a base having a bottom section and an upstanding section extending upwardly from the bottom section, a support member formed near an upper surface section of the upstanding section, and an arm member rotationally attached to the support member to take first and second positions. The bottom section and the upstanding section define at least a part of a holding space in the base. At the first position, the arm member is located on the upper surface section. The arm member can be located above the bottom section, i.e. second position, by changing the position to thereby form a container holding hole together with the upstanding section.