Foldable climbing ladder

The invention belongs to the technical field of climbing ladders, in particular to a foldable climbing ladder. The ladder mainly comprises a support, a handrail, a pedal plate, a limiting mechanism, adrawing piece and the like, the support comprises a folding support and a fixed support; the folding support comprises an upper support and a lower support; a handrail is arranged on the folding support; the handrails on the upper support and the lower support are fixed with the pedal through index pins; an upper support of the folding ladder is fixed to the front wall of the cabin body and connected with the lower support through a pin shaft, overturning and folding of the lower support are achieved, the lower support is folded to the proper position of the upper support and then limited through a stop pin, the locking performance of the folding ladder is guaranteed, occupied space of pedals and handrails is small after the climbing ladder is folded, and the upper support and the lower support are folded into a