To provide a card collection mechanism for shortening the collection time of a card with simple configurations.

A card collection mechanism 55 is provided with: a card collection storage 37 for collecting a card 2; a conveyance roller 11 for conveying the card 2 from a linearly shaped conveyance path 8 of the card 2 to the card collection storage 37; and a guide part 38 for guiding the card 2 to the card collection storage 37. The guide part 38 is configured to guide the card 2 while bending the card 2 in a direction where an energizing force going toward the surface of the conveyance roller 11 is generated in the card 2 when the card 2 is conveyed to the card collection storage 37, and the conveyance roller 11 is configured to convey the card 2 until the card 2 is put in a collectable state in the card collection storage 37.