PROBLEM TO BE SOLVED: To provide a supporter fixture capable of treating an affected area in an optimum state by fixing the supporter for ankle treatment in close contact between the supporter and the ankle when the supporter for ankle treatment is attached to the ankle. .. SOLUTION: The supporter fixture 1 is provided with a main body portion 2 formed in a short strip shape and a hook-and-loop fastener portion 3 fixed to the back surface of the main body portion 2, and the main body portion 2 and the main body portion 2. The spring material 5 is internally provided between the engagement portion 3 and the ankle receiving portion 1A formed in a gently curved shape toward the outside in the lower half portion thereof. [Selection diagram] Fig. 1【課題】 足首治療用サポーターを足首に装着する場合に、サポーターと足首の間を密着状に固定して、最適な状態で患部の治療を行うことができるようにしたサポーターの固定具を提供する。【解決手段】 短尺の帯状に形成した本体部2と、その本体部2の背面に固着した面ファスナー製の係着部3とを備えたサポーターの固定具1であって、その本体部2と係着部3との間にバネ材5を内設するとともに、その下半部に、外側に向けた緩やかな湾曲状に形成した踝受け部1Aを設けた構成とする。【選択図】図1