Limb exercise device

The utility model relates to the technical field of limb exercise, in particular to a limb exercise device which comprises a base plate, a seat is arranged above the base plate, the lower surface of the seat is connected with the base plate through symmetrical stand columns, a main shaft is arranged at the bottom of a supporting frame, a driving rotary disc is arranged on the outer wall of the circumference of the main shaft and close to the middle, and wheel discs are arranged at the two ends of the main shaft. A connecting shaft is embedded in the middle of the fixed seat, a driven turntable sleeves the middle of the connecting shaft, and cranks are arranged at two ends of the connecting shaft; according to the limb exercise device, the main shaft and the wheel disc are installed at the bottom of the supporting frame, the T-shaped block is installed on the wheel disc, the T-shaped block is matched with the fixing bolt to facilitate adjustment of the rotating diameter, patients of different figures can conve