The invention is applicable to the technical field of traffic equipment, and provides an unattended self-service payment device. The device comprises a cabinet, and a first card receiving module mounted on the cabinet. The first card receiving module comprises a telescopic assembly, a card receiving assembly, and a payment unit. The telescopic assembly comprises guide rails arranged in parallel, supporting rods used for fixing the guide rails, a telescopic motor fixed on one of the supporting rods, a leading screw, and a sliding block. The card receiving assembly comprises a box body, an ETC antenna, an input unit, a printing unit, a card inserting unit, a sliding way used for conveying a card, and a card receiving box. The two sides of the bottom of the box body are slidably connected with the guide rails. The bottom of the box body is fixedly connected with the sliding block. The antenna board, the ETC antenna, the input unit, the printing unit, the payment unit, the position detector, and the overturning motor are all connected with a control unit on the self-service payment device.