A plug-in type busbar comprising: an insulating housing; a plurality of busbar parts made of conductive materials, disposed inside said insulating housing and insulated from each other; wherein, each of said busbar parts comprises a connector base and a plurality of connectors which are integrally formed on one side of said connector base and extend out of said insulating housing for being electrically connectable in the form of a connector set to an electrical appliance, and the connector set is formed by adjacently arranged connectors respectively connecting with an individual connector base; said busbar, comprising a first end and a second end, is provided with two pluggable interface sets respectively disposed at each end, the interface set at the first end is provided with a structure that is arranged for being connected with the interface set at the second end in a plugged manner, said busbar is connectable with another two said busbars through the interface sets at both ends thereof; two connector sets of two adjacent busbars are in electrical connection with each other after busbars are connected together; characterized in that, said connector set comprises a first connector set disposed close to the interface set at the first end, a second connector set disposed closed to the interface set at the second end, and an intermediate connector set disposed on the middle segment of said connector base; the connectors of said first connector set are spaced apart from each other in the longitudinal direction of said busbar; the connectors of said second connector set have the corresponding arrangement to that of the connectors of said first connector set, and each two adjacent connectors of said first connector set and said second connector set formed on the same connector base are spaced apart with each other in the direction of thickness of the connector; after two said busbars are connected together by one busbar being plugged in another, each connector of said first connector set on one busbar part is only connected in an overlapped manner with a connector of said second connector set of a corresponding busbar part of an adjacent busbar, and in the direction that two connectors approach to each other, the difference between the deviation of one connector and that of the other connector is equal to the thickness of a corresponding connector. an insulating housing; a plurality of busbar parts made of conductive materials, disposed inside said insulating housing and insulated from each other; wherein, each of said busbar parts comprises a connector base and a plurality of connectors which are integrally formed on one side of said connector base and extend out of said insulating housing for being electrically connectable in the form of a connector set to an electrical appliance, and the connector set is formed by adjacently arranged connectors respectively connecting with an individual connector base; said busbar, comprising a first end and a second end, is provided with two pluggable interface sets respectively disposed at each end, the interface set at the first end is provided with a structure that is arranged for being connected with the interface set at the second end in a plugged manner, said busbar is connectable with another two said busbars through the interface sets at both ends thereof; two connector sets of two adjacent busbars are in electrical connection with each other after busbars are connected together; characterized in that, said connector set comprises a first connector set disposed close to the interface set at the first end, a second connector set disposed closed to the interface set at the second end, and an intermediate connector set disposed on the middle segment of said connector base; the connectors of said first connector set are spaced apart from each other in the longitudinal direction of said busbar; the connectors of said second connector set have the corresponding arrangement to that of the connectors of said first connector set, and each two adjacent connectors of said first connector set and said second connector set formed on the same connector base are spaced apart with each other in the direction of thickness of the connector; after two said busbars are connected together by one busbar being plugged in another, each connector of said first connector set on one busbar part is only connected in an overlapped manner with a connector of said second connector set of a corresponding busbar part of an adjacent busbar, and in the direction that two connectors approach to each other, the difference between the deviation of one connector and that of the other connector is equal to the thickness of a corresponding connector.