The utility model relates to an insulating tube type bus. The insulated tubular bus comprises a tubular copper bus, a main insulator wrapped on the tubular copper bus, a metal shielding layer and a sheath layer, the outer side of the metal shielding layer is sleeved with a ground wire leading-out device, and the ground wire leading-out device is fixedly and electrically connected with the metal shielding layer; during production and manufacturing, the grounding wire leading-out device sleeves the outer side of the insulating tube type bus metal shielding layer; fixedly and electrically connecting the ground wire leading-out device with the metal shielding layer; epoxy resin impregnation integrated casting is adopted, a sheath layer is cast on the outer side of the metal shielding layer, and the fixed electrical connection position of the grounding wire leading-out device and the metal shielding layer is covered with the sheath layer; therefore, the problems that the ground wire is inconvenient to lead out, the lead-out part of the ground wire on the sheath layer is not tightly sealed, and the insulating tube bus is frequently broken down after moisture and moisture enter the metalshielding layer and the main insulating layer are solved.