The utility model relates to a power transmission line device field provides a power transmission line lifting tool, which comprises a housin, wrap up in the spool, hanging wire and couple, the both ends of wrapping up in the spool are connected with the casing rotation, twine in wrapping up in the spool at the middle part of hanging wire, the one end of hanging wire with wrap up in spool fixed connection, the other end and the couple of hanging wire are connected, the outer wall of casing is provided with the ratchet, the ratchet is the same with the axis of rotation of wrapping up in the spool, ratchet and the one end fixed connection of wrapping up in the spool, the ratchet is located the straight line that the axis of rotation belonged to with the tie point of wrapping up in the spool,still be provided with the non return part that is used for restricting the ratchet rotation direction on the casing, the one end card of non return part is located between two adjacent teeth of ratchet. This power transmission line lifting tool can set up the effect that realizes promoting the power transmission line on the angle bar of defeated wire support top. The utility model also providesa defeated wire support installs power transmission line lifting tool on the most likely defeated wire support. Its security is high.