The invention relates to a wearable lower limb man-machine aid. Primarily, an operating device is used for operating a control unit of a kinetic energy supply device to actuate so that the control unit can control the kinetic energy supply device to supply kinetic energy to a power source of a lower limb assist device. Then a pulling member is pulled tightly by the power source so that a thigh section support and a calf section support are in an upright state to assist a squat user to stand up. Accordingly, it can assist a squat user to stand up, thus when the user’s hand is loaded with heavy objects, he/she can stand up more effortlessly by means of the lower limb assist device. It not only allows users to achieve the purpose of convenience of easy effort, but also prevents users from being injured.本發明係有關於一種穿戴式下肢人機輔具，其主要係以操作裝置操作動能供應裝置之控制單元作動，令控制單元控制動能供應單元供應下肢輔助裝置之動力源動能，讓動力源利用將拉引件拉動緊繃，使大腿段支撐架與小腿段支撐架之間呈直立狀態，即可輔助蹲下之使用者向上站起；藉此，以輔助使用者於蹲下的狀態向上站起，使得於當使用者手部負載重物時，亦可利用該下肢輔助裝置的輔助更為輕鬆省力的向上站起，不僅讓使用者達到輕鬆省力方便之目的，且更可防止使用者受傷的情況發生，而在其整體施行使用上更增實用功效特性者。
