The utility model provides a transmission line iron tower hydraulic pressure is assembled and is dismantled convenient device of salvageing fast, including the fixture who sets up at the iron tower tower leg, set up the pneumatic cylinder between the fixing base of fixture and iron tower, the pneumatic cylinder passes through oil pipe and is connected with hydraulic power unit, hydraulic power unit is connected with programmable controller. The utility model discloses li xinta, emergency time do not lack, do not avoid long -time economic loss, the circuit reliability service that has a power failure and bring in addition.