Electronic payment device and system

The utility model discloses an electronic payment device and a system. The electronic payment device comprises a central processing unit, an input keyboard, a storage device, a wireless communication device, a display device and a printing device, wherein the central processing unit is used for controlling operation of the whole device and processing instructions; the input keyboard, the storage device, the wireless communication device, the display device and the printing device are respectively connected with the central processing unit; the input keyboard is used for inputting identification information and transaction requests of users; the storage device is used for storing user information and key information; the wireless communication device is used for carrying out data exchange with an external device in a wireless transmission mode; the display device is used for displaying the information inputted by the users and the processing result of the central processing unit; and the printing device is use