Following the controversy over trendy toy blind boxes, CARD ELF (a blind box-style automatic card vending machine equipped with a high-definition touch screen and voice guidance function) has quickly become popular with its "random card drawing" marketing model, and at the same time has become a new controversial focus in the consumer field. With core selling points such as "randomly unlock limited editions" and "hidden editions drop with probability", they attract consumers to participate in card drawing, but in fact hide multiple risks such as opaque probability and induced excessive consumption, turning the card vending equipment that should have both collection and entertainment attributes into a high-incidence carrier of consumer disputes.