The utility model provides a pair of on -load tap -changer hoisting machine, the on -load tap -changer who aims at solving among the prior art maintains difficult technical problem. The utility modeldiscloses an on the position that's an on -load tap -changer hoisting machine including the base, is provided with the stand at the base, is provided with the crossbeam on the stand, is provided withlever block on the crossbeam, and the base can conveniently utilize lever block to lift by crane when lifting by crane on -load tap -changer on being fixed in the transformer, because the crossbeam rotates connects on the stand, consequently, on -load tap -changer is hung out the oil tank and can be be conveniently placed on -load tap -changer in suitably is provided. This scheme can avoid on -load tap -changer lifting by crane in -process related parts and electric wire netting contact at the in -service use in -process effectively, is favorable to on -load tap -changer's maintenance to the potential safety hazard in the on -load tap -changer maintenance process has been reduced. This hoisting machine installs on the transformer, has reduced the space that hoisting machine occupy, and hoisting machine has good universal performance.