The utility model provides a
lower limb supporting device for an operating
bed. The
lower limb supporting device comprises a base frame, a
thigh frame, a shank frame and a foot bracket. The base frame is fixed on an operating
bed; one end of the
thigh frame is rotationally connected with the base frame; the other end is rotationally connected with one end of the shank frame; the foot bracket comprises a foot pedal and a connecting plate; the connecting plate is rotationally connected with the other end of the shank frame, an arc-shaped
concave surface is arranged on the inner side of the connecting plate, and the foot bracket can move horizontally and is locked and fixed with the base frame. During use, the base frame is fixed to a designated position of an operating
bed, the foot bracket is moved, the
thigh frame and the shank frame are adjusted to preset angles, and the foot bracket and the base frame are locked and fixed through the locking structure. According to the utility model, the thigh frame, the shank frame and the foot bracket are rotatably connected, and the foot bracket can be horizontally moved and locked and fixed, so that the lower limbs can be effectively supported and flexibly adjusted, and the requirements of different operative positions can be met; the arc-shaped
concave surface of the connecting plate is matched with the outline of the
heel, so that the
heel of the patient can be prevented from being pressed, and the tolerance of the patient is improved.