The utility model discloses an electric power overhaul ladder, including parallel arrangement's first montant and second montant, link to each other through uniformly spaced horizontal pole between first montant and the second montant, the downside of first montant and second montant is equipped with fixes the cover, the upside of first montant and second montant is equipped with along first montant and the gliding sliding cover of second montant, sliding cover cover in outside the fixed cover, the top of first montant and second montant is equipped with the toolbox of placing the maintenance instrument, be equipped with elevating gear in the toolbox. The utility model discloses set up fixed cover with cover in the outer sliding cover of fixed cover to making sliding cover slide on maintenance ladder through first sliding sleeve and second sliding sleeve, covering the health of maintainer, prevent that the maintainer from falling down from maintenance ladder, the security that improves maintenance ladder is transferred to the opening part in toolbox with the maintenance instrument with in the cell body through elevating gear, makes things convenient for the maintainer to take, reduces the intensity of labour of maintainer, is worth popularizing and applying.