A walk aid and a walk aid along with a wheelchair comprises a front wheel set, a rear wheel set, a power unit, a supporting plate unit, and an armrest unit installed on a body. Whereby, a retracting state of the supporting plate contributes to the walk aid for the physically disabled whereas, an unfolding state of the supporting plate contributes to a motor-driven vehicle. While the wheelchair connects to a linking unit, a motor-driven wheelchair whose veering, speed, and back-and-forth are controllable could be accomplished.本發明係有關一種助行器及結合輪椅之助行器,藉由在本體上設置前輪、後輪組、動力單元、托板單元及扶手單元之助行器,作為行動不便者之助行(步)器〔托板收合狀態〕或簡易電動車〔托板拉開狀態〕使用,或是進一步藉由連結單元與一般輪椅作結合,以形成可控制轉向、速度與前後之電動輔助輪椅。(1)‧‧‧本體(2)‧‧‧前輪(3)‧‧‧後輪組(31)‧‧‧左後輪(32)‧‧‧右輪組(4)‧‧‧動力單元(42)‧‧‧控制器(43)‧‧‧電源(5)‧‧‧托板單元(51)‧‧‧座體(52)‧‧‧托板(6)‧‧‧扶手單元(61)‧‧‧支柱(611)‧‧‧調整扳手(62)‧‧‧扶手