Portable data line

The invention relates to an electronic device data transmission line, especially relates to a portable data line. The portable data line comprises a USB plug, a data transmission line, and a cell phone connector. The portable data line is characterized in that the USB plug is connected with a protection head I, and the cell phone connector is connected with a protection head II; the protection head I comprises an upper protection head and a lower protection head; the side surface of the upper protection head is provided with a memory card jack, and a single-chip microcomputer is disposed in the upper protection head; the lower protection head is provided with a USB interface corresponding to the USB plug, and the USB interface is connected with the single-chip microcomputer; the back surface of the lower protection head is provided with a hollow jack, which is corresponding to an L-shaped plug disposed on the protection head II; and the protection head II is provided with an interface corresponding to the cel