Portable power line for electric toothbrush

The utility model discloses a portable power line for an electric toothbrush, which comprises a top seat, an insertion column is connected in a central through hole of the top seat in an up-down sliding manner, and a terminal is embedded in the surface wall of the insertion column; the center of the bottom side wall of the top seat protrudes downwards to form an inner shell, an adapter is installed in a cavity of the inner shell, the output end of the adapter is electrically connected with the terminal, an electric wire is wound around the outer side of the inner shell, and one end of the electric wire is electrically connected with the input end of the adapter; the bottom end of the top seat is horizontally and rotatably connected with an outer cover body, a strip-shaped through hole formed in the side wall of the outer cover body is a threading hole, the outer cover body covers the inner shell, the space between the outer cover body and the inner shell is a coiling cavity, and the other end of the wire pene