The present invention provides a lower limb exercising device, comprising a base, two swinging mechanisms and a driving member. The two swinging mechanisms are respectively disposed on the base for the left and right lower limbs of the user, and each swinging mechanism includes a one-legged abutment. a member, a calf abutment member and a sole abutment member, the upper end of the thigh abutment member is pivotally connected to the base, the upper end of the calf abutment member is pivotally connected to the lower end of the thigh abutment member, and the rear end of the sole abutment member is pivoted Connected to the lower end of the calf abutment member, the driving member is coupled to the two swinging mechanisms to provide power to the swinging mechanism to drive the thigh abutment member, the calf abutment member and the sole abutment member of each swinging mechanism to pivotally swing, thereby Each swinging mechanism drives the lower limb of the user to move.本創作係提供一種下肢運動裝置,包含一基座、二個擺動機構及一驅動構件,二個擺動機構分別設置於基座而供使用者的左右下肢靠置,各個擺動機構包括一大腿靠置構件、一小腿靠置構件以及一腳掌靠置構件,大腿靠置構件的上端樞接於基座,小腿靠置構件的上端樞接於大腿靠置構件的下端,腳掌靠置構件的後端樞接於小腿靠置構件的下端,驅動構件連結於二個擺動機構而對擺動機構提供動力,以驅使各個擺動機構之大腿靠置構件、小腿靠置構件及腳掌靠置構件進行樞轉擺動,從而使各個擺動機構帶動使用者的下肢進行運動。