The invention discloses a live working wire lifting device, which comprises a connection plate, wherein two vertical plates are fixedly arranged at the bottom of the connection plate; a same insulatedpulling plate is arranged at the lower parts of the two vertical plates; the bottom of the insulated pulling plate is hinged with two vertical shafts; a lifting hook is fixedly arranged at the bottomend of each vertical shaft; a motor is fixedly arranged at the top of the connection plate; a first bevel gear is fixedly arranged on an output shaft of the motor; rotating shafts are arranged at twosides of the first bevel gear; the rotating shafts are rotationally sleeved with a fixed seat which is fixedly arranged at the top of the connection plate; and second bevel gears meshed with the first bevel gear are fixedly arranged at one ends, which are close to each other, of the two rotating shafts. The live working wire lifting device is simple in structure and convenient to operate, secondary lifting and primary lifting are carried out at the same time, the wire lifting efficiency is effectively improved, the labor intensity of an operator is reduced and the live working wire lifting device is convenient for the operator to use.