Ankle function protecting cushion

The utility model belongs to a medical clinical auxiliary appliance, and provides an ankle function protecting cushion. A protecting cushion (1) is provided with a bottom surface and wall surfaces, the bottom surface and the wall surfaces of the protecting cushion (1) which are made of elastic materials are integrated and form an unclosed cavity for holding feet and ankles of a patient, the wall surfaces and the bottom surface of the protecting cushion are in arc transition, a plurality of spherical bumps (2) which are distributed uniformly are arranged on the wall surfaces and the bottom surface of the protecting cushion, hook-and-loop tapes are arranged on the wall surfaces of two sides of the protecting cushion, connecting straps (3) which are connected with the wall surfaces of the two sides of the protecting cushion are arranged on the wall surfaces of the two sides of the protecting cushion, and two ends of each connecting strap (3) are provided with hook-and-loop tapes. The ankle function protecting cu