The utility model discloses a multifunctional elevating cushion for lower limbs. The elevating cushion comprises a base portion and four supporting legs. The top surface of the base portion is an inclined plane which inclines along the longitudinal direction of the base portion, the included angle formed between the inclined plane and the horizontal plane is in a range of 15 degrees to 20 degrees, and the four supporting legs are arranged at four corners of the bottom surface of the base portion respectively and connected with the bottom surface of the base portion. According to the elevating cushion, the problems of arrangement of functional positions of lower limbs of patients suffering lower limb fracture, total hip replacement and lower limb external fixators are solved, detumescence of patients is facilitated, deep vein thrombosis is prevented, postoperative complications are reduced, the comfort of the patients is improved, and treatment and nursing operations are facilitated.