The invention relates to the technical field of insulative ladders for electric power, and in particular relates to an insulation ladder for hot-line work. The insulation ladder for the hot-line workcomprises a hook, a single-column ladder, a lower end fixing unit and a holding hoop which are sequentially connected from top to bottom, wherein the hook comprises a hook body and a first sleeve arranged at one end of the hook body; the single-column ladder comprises a vertical bar and multiple pedals which are horizontally arranged on the vertical bar at intervals, the upper end of the verticalbar is arranged inside the first sleeve in a sheathing manner, and a supporting structure is arranged at the lower sides of the pedals; the lower end fixing unit comprises an insulation tube and a second sleeve arranged at one end of the insulation tube, and the lower end of the vertical bar is arranged inside the second sleeve in a sheathing manner; and the holding hoop comprises a hoop body as well as a tightening device and a lock catch which are respectively arranged at the two ends of the hoop body, a bandage is arranged between the tightening device and the lock catch, an adjusting buckle is arranged on the bandage, and the adjusting buckle is used for adjusting length of the bandage. The insulation ladder for the hot-line work is simple in structure, easy to mount, firm in overall structure and good in stability and can be applicable to electricity poles with different thicknesses.