The invention relates to a wheelchair auxiliary structure of a ladder, which is mainly composed of a wheelchair body and a first fixed column arranged on the wall of a stair, which not only provides engagement travel, but also provides a safe and stable external frame holding, which can make the wheelchair body more stable, stable and safer when the stair moves.本新型創作係關於一種爬梯之輪椅輔行構造，主要係於一輪椅車體與一樓梯之壁面所設一斜上之第一固定柱，除提供嚙合之行進外，更提供安全穩固之外部框圍之抓著，可以使得該輪椅車體於該樓梯行進時更為穩定與穩固且更為安全。
