The present invention is to provide a multifunctional wheelchair backboard that is lightweight and portable, and can be used as a dining table, a wheelchair backrest, and a simple barrier-free ramp. The wheelchair backboard comprises: a plurality of plates pivotally connected to each other and foldable; and at least one engaging member respectively locked between the plates.本新型在於提供一種輕巧且攜帶方便,並可作為餐桌、輪椅靠背及簡易無障礙坡道使用的多功能輪椅背板。其特徵在於,該輪椅背板包括:數片相互樞接並可折疊的板體;以及至少一分別鎖固於該等板體之間的接合件。