The invention discloses a method for transforming a tangent tower of double-circuit double-bundle transmission lines by lifting in an electrified mode in another place, which belongs to the field of equipment installation. In the method, the current old tower and a common-tower double-circuit transmission lines thereon are involved. The method adopts a construction process of assembling a new tower in the electrified mode at a new tower position by using a landed derrick mast, transferring earth wires from the old tower to the new tower in the electrified state, and dismantling the old tower in the electrified mode in the longitudinal space between the common-tower double-circuit transmission lines, avoids the phenomenon that the two common-tower double-circuit lines have power failure atthe same time, improves the safety and the reliability of a power grid, overcomes the difficulty of an insufficient safe distance between a craning rope and electrified wires, and solves the problemsthat an cross arm member is overlarge, has the insufficient safe distance to the electrified wires, and is difficultly controlled by installation personnel. By slitting a tower body section member into 4 parts according to main materials and craning the 4 parts separately, the craning load of the derrick mast is lowered, and working safety is improved. The method can be widely applied to the fields of the displacement or transformation of the conventional overhead power transmission lines or iron towers.