The invention discloses an insulated fixing support of an upper lead of a fuse wire. The insulated fixing support comprises an insulating rod, wherein one end of the insulating rod is provided with an installing support, and the other end of the insulating rod is provided with a supporting mechanism; the installing support comprises a spring mechanism which is connected with the insulating rod in a sleeving way and a hook which is located at the end part of the insulating rod; the spring mechanism can slide along the axial direction of the insulating rod; the supporting mechanism comprises a supporting rod; one end of the supporting rod is connected with the insulating rod in the sleeving way and can slide along the axial direction of the insulating rod, and the other end of the supporting rod is provided with a clamp which can be used for clamping the upper lead of the fuse wire. The insulated fixing support of the upper lead of the fuse wire, disclosed by the invention, has the technical effects that operation of an electrician in an insulating bucket can be realized, and the operation safety is increased; meanwhile, disconnecting and connecting of the upper lead are not needed, the operation time is shortened, and the operation economic efficiency is improved.