To provide a container holder device in which a support member is hard to interfere when a large-sized container is accommodated.

A container holder device includes a support stem 4, a support movable part 5 which is held by the support stem 4 and displaces between a retraction position and an extension position, and an extension energization part which energizes the support movable part 5 towards the extension position. One of a first pivot part 43 and a second pivot part 60 is formed into a projection while the other is formed into a long hole shape, and one of a first guide part 45 and a second guide part 65 is formed into a protrusion while at least a part of the other is formed into a curved long hole shape. Thus, the second pivot part 60 of the support movable part 5 is slidably engaged with the first pivot part 43 of the support stem 4, and the second guide part 65 of the support movable part 5 is slidably engaged with the first guide part 45 of the support stem 4.