Provided is a foot joint supporter which can push up the wearer's plantar arch to support the formation of the medial longitudinal arch, thus improve the walking performance of the wearer, increase the stability of the food joint, reduce fatigue of the triceps surae muscle, and relieve pain in the Achilles' tendon, triceps surae muscle and the outside of the foot joint (ligament). The foot joint supporter (10) comprises a first anchor section (2) for tightening the wearer's lower thigh with a tubular knitted fabric, a second anchor section (3) for tightening the wearer's instep and sole with the tubular knitted fabric, and a knitted figure eight section (4) between the first anchor section (2) and the second anchor section (3), being composed of a foot section (11) and a body section (12) and supporting the wearer's talocrural joint, wherein said food section (11) is composed of an instep section (11a) covering the wearer's instep and a sole section (4a) covering the wearer's sole, and the stretch resistance, in the length width direction of the tubular knitted fabric, of the sole section (4a) is larger than the the stretch resistance, in the length width direction of the tubular knitted fabric, of the instep section (11a).
