Segmented adjusting type limb supporting device

The invention discloses a segmented adjusting type limb supporting device which is provided with a placing base, a limb supporting structure and a binding face forming structure, a supporting sleeve seat is movably arranged in the placing base, a movable driving assembly is connected to the supporting sleeve seat, a supporting arc face is formed on the upper end face of the supporting sleeve seat, and the supporting arc face corresponds to the popliteal space of a patient; the limb supporting structure is provided with a first combination plate and a second combination plate, the first combination plate and the second combination plate are tangent to the supporting arc face, the attaching face forming structure is provided with an attaching pad, the end of the attaching pad extends into the first combination plate and the second combination plate, and the supporting sleeve base can stretch out and draw back so as to adjust the height of the supporting arc face. According to the device, when the height of the