The utility model relates to an electric power facility technical field especially relates to the strutting arrangement and the bottom line disconnect device of a ground wire disconnect ware. The supporting mechanism of ground wire disconnect ware includes main tributary vaulting pole, two at least installation bodies and receives the supporter of main tributary vaulting pole bearing, wherein: the installation body and function is in linking firmly with the installation of high -voltage line tower, the main tributary vaulting pole is installed in at least two the installation body, the supporter is used for supporting and being spacing ground wire disconnect ware, including the end support the wall with connect in the collateral branch that the wall both sides were supported at the end props the wall. Bear the weight of on the supporting mechanism with spacing through setting up ground wire disconnect ware, and then operate ground wire disconnect ware and carry out the ground wire disconnect operation on the high -voltage line tower, increase the strong point and limit point to ground wire disconnect ware through the supporting mechanism for operational stability, position accuracy and the operational safety of disconnect ground wire have obtained obvious improvement.