A lower limb aids comprises a support unit and a carrying unit connected with the support unit. The support unit comprises a waist support mechanism capable of being matched up with a users waist and two leg support mechanisms respectively corresponding two legs of the user and spacingly pivoted with the waist support mechanism. The carrying unit comprises a carrying mechanism located between the leg support mechanisms and a positioning mechanism disposed to the waist support mechanism and spaced apart from the leg support mechanisms. Utilizing the carrying mechanism matched up with the positioning mechanism, this invention can be moved between a walking aid position and a sitting position, capable of not only assisting a user to walk or perform rehabilitation, but also providing the user to sit and rest, so as to perform long distance movement. In addition, the compact overall size facilitates storage.一種下肢輔具,包含一支撐單元,及一連設於該支撐單元的承載單元。該支撐單元包括一個能與一使用者腰部相配合的腰部支撐機構,及兩分別對應該使用者雙腿且間隔樞設於該腰部支撐機構的腿部支撐機構。該承載單元包括一位於所述腿部支撐機構之間的承載機構,及一與所述腿部支撐機構相間隔地設置於該腰部支撐機構的定位機構。利用該承載機構配合該定位機構,而能在一助行位置與一乘坐位置間移動,不僅能協助使用者行走或復健,也能供使用者乘坐休息,進而進行長距離的移動,而且整體體積小有利於收納。2‧‧‧支撐單元21‧‧‧腰部支撐機構22、22’‧‧‧腿部支撐機構221、221’‧‧‧第一支架222、222’‧‧‧第二支架223、223’‧‧‧第三支架224、224’‧‧‧第一連接件225、225’‧‧‧第二連接件3‧‧‧承載單元31‧‧‧承載機構312‧‧‧承載件32‧‧‧定位機構321、321’‧‧‧定位件
