The utility model relates to a hanging insulating drainage line support of peak of staff cover, inlay set (1) including the peak of the staff, inlay set symmetrical both sides in (1) outside at the peak of the staff and connect one non -conductive support rod (2) respectively, all cup joint fixing device (3) that are used for the drainage line at least on every non -conductive support rod (2), fixing device (3) are equipped with two pole setting (6) including sleeve (4) in one side of sleeve (4), form draw -in groove (7) between two pole setting (6), and in one of them pole setting (6) articulated folded plate (8), folded plate (8) correspond the cooperation with draw -in groove (7). The utility model discloses an advantage: this device simple structure, easily operation, the security performance is high, and the drainage line is high in top passageway security, reduces and shields the step, has alleviateed intensity of labour greatly and has shortened at electrified regional dwell time, improves the security.