Interface device and card reader

The utility model relates to an interface device and a card reader, the interface device comprises a housing and an interface assembly, the interface assembly comprises a body and at least one interface end connected to the body, the body is embedded in the housing in a sliding manner, and the interface end has a first state in which the interface end is accommodated in the housing and a second state in which the interface end extends out of the housing. And when the interface end is in the second state, the interface end can be connected to external equipment for data transmission. According to the interface device provided by the utility model, when the interface end is in the second state that the interface end extends to the outer side of the shell, the interface end can be connected to the external equipment for data transmission, and when the interface end is in the first state that the interface end is accommodated in the shell, the overall appearance size of the interface device can be reduced, and th