The invention relates to an adjustable drawing ladder, a mobile substation pedestal and a mobile substation. The adjustable drawing ladder comprises at least two ladder sections; any two adjacent ladder sections form an upper ladder section and a lower ladder section which are arranged oppositely; the upper ladder section and the lower ladder section are rotatably connected through a hinged shaft,so that the lower ladder section can turn down relative the upper ladder section around the hinged shaft; and top supporting structures which are positioned above the hinged shaft and are used for performing corresponding top push cooperation are arranged on the opposite sides of the upper ladder section and the lower ladder section correspondingly, so that the two ladder sections are mutually supported to form a stair structure when the lower ladder section turns up relative to the upper ladder section around the hinged shaft. In the any adjacent two ladder sections, the lower ladder sectioncan turn down relative to the upper ladder section; according to the actual use requirement, the number of the drawn ladder sections is adjusted; the ladder sections are supported mutually to form the stair structure through cooperation of the supporting structures and the hinged shaft; and the included angle between the adjustable drawing ladder and the ground is adjustable, so that the adjustable drawing ladder is convenient for people to go up and down.