Knee arthroscopic surgery lower limb support frame and surgical bed

The utility model relates to the technical field of medical instruments, in particular to a knee arthroscopic surgery lower limb supporting frame which comprises a front frame body used for supporting thighs of a patient and a rear frame body used for supporting soles of the patient, and the front frame body and the rear frame body are arranged front and back and can support the thighs and the soles of the patient respectively so that knee joints of the patient can be kept bent and stretched. The front frame body and the rear frame body are both in an L shape, connecting rods are movably and adjustably arranged at the two ends of the transverse edge of the front frame body in the length direction, and thigh clamps are rotatably and adjustably arranged at the first ends of the connecting rods. And a shank pad is rotatably and adjustably arranged on the transverse edge of the rear frame body. The operating bed comprises a bed body, a guide rail fixed on the side face of the bed body and two medical fixers conne