LADDER

A ladder is provided. The ladder includes a ladder frame, wherein on the ladder frame foot boards are disposed, wherein the ladder frame includes a front bracket and a back bracket; the front bracket is provided with fixing joints; a handrail collapsible by sliding or overturning is disposed on the fixing joints; collapsing/unfolding structures for collapsing or unfolding the handrail are disposed between the fixing joints and the handrail; and after the ladder frame and the handrail are collapsed, a footprint of the handrail in a thickness direction is not more than a footprint of the fixing joints. By disposing the fixing joints to mount the handrail for providing a clearance space to collapse the handrail, the handrail is collapsed, by sliding or overturning, to an inner side of the ladder frame without increasing a footprint of a wholly collapsed ladder.