The utility model provides a POS (point of sale) terminal and mobile phone integrated device which comprises a POS terminal unit and a mobile phone unit, wherein the mobile phone unit is provided with a communication interface; the POS terminal unit comprises a key part, a containing part, an insertion piece and at least one card reading part; the containing part is adjacent to the key part; the insertion piece is arranged in the containing part or on the position of the key part adjacent to the containing part, and is matched with the communication interface; a clamping chute is arranged on the inner side of the containing part; and the mobile phone unit is connected with the POS terminal unit through the clamping chute. The POS terminal and mobile phone integrated device provided by the utility model has the advantages that: the device has a small volume and is convenient to carry; and when the device is used for consumption, the safety perforamnce is relatively high.