The present invention provides a portable file-copying apparatus which includes a first connecting unit, a second connecting unit, and a control unit. The first connecting unit can receive a first portable storage media which includes an original file. The second connecting unit can receive a second portable storage media. Furthermore, the control unit is connected to the first connecting unit, the second connecting unit, and a memory. The control unit is applied for storing the original file in the memory, and copying the file to the second portable storage media in accordance with a control signal.