The purpose of the present invention is to provide a container holding member capable of simply, reliably, and stably holding a plurality of medical containers, and capable of being used efficiently for the medical containers. The present invention is a container holding member capable of holding a plurality of bottomed tubular medical containers. The container holding member is provided with: a flat plate-shaped substrate section having a plurality of through holes which penetrate one surface and the other surface； and a plurality of tubular housing sections which have the one surface side of the substrate section as an upper side open end and the other surface side as a lower side open end, and which project upward or downward from the hole edge of each of the through holes. The tubular housing sections are configured to be able to hold the medical containers in a state in which the outer bottom surfaces of medical containers project downward from the lower side open end when the medical containers are housed in the tubular housing section.
