Telescopic charging wire

The utility model discloses a telescopic charging wire which comprises a left main body shell and a right main body shell which are fixedly connected to form a cavity with a hollow interior. An uppercover plate, a first clockwork spring, an upper shell, a reel, a data line, a middle shell, a second clockwork spring, a lower shell, a third clockwork spring and a lower cover plate are sequentiallyarranged in the cavity from top to bottom, a fixing shaft is integrally formed on the reel, and mounting grooves are formed in the two ends of the fixing shaft. One end of the first spring and one endof the third spring are fixedly installed in the installation groove, the other end of the first spring and the other end of the third spring penetrate through the cavity and are electrically connected with a USB line on the outer side of the cavity, and the end, away from the connector, of the data line is electrically connected with the first spring and the third spring in the installation groove. The one-way telescopic