The invention discloses a connecting conductor, a bus connecting structure and a detachable bus used for GIS equipment. The connecting conductor comprises first transition members and second transition members of which the axes extend along a left-and-right direction. The left end of each first transition member is provided with a first transition member left end connecting structure which is used for being connected with a corresponding insulating supporting member via a first fastening member. The right end of each first transition member is provided with a first transition member right end connecting structure. The left end of each second transition member is provided with a second transition member left end connecting structure which is used for being connected with the right end connecting structure of the first transition member via a second fastening member. The right end of each second transition member is provided with a plugging structure which is used for being matched with central conductors in a plugging way. Detachment of the two central conductors can be realized without arrangement of a tool hole at the connecting part of the two central conductors so that detachment of the bus in the GIS equipment can be greatly facilitated and working efficiency can be enhanced.