The utility model discloses a device is changed to corner vase, including horizontal pole and two spinal branch poles, horizontal pole fixed connection is between two spinal branch poles, and the top of every spinal branch pole all is equipped with a set of cable strutting arrangement, still be provided with clamping device on every spinal branch pole respectively for fixed with corner vase support. The utility model has the advantages that: fixing the position of whole device through clamping device, utilizing cable strutting arrangement with cable and the separation of corner vase, make cable and the contact of corner vase again after having changed the corner vase, this device can act as interim corner vase when change corner vase, reserve sufficient operating space for change work, and whole in -process cable still remains the tensioning state throughout, has practiced thrift the change time greatly, has improved change efficiency.