The present invention discloses a supporter for knee joint including a pressing plate for pressing the knee joint from outside and/or inside and a fixing portion for fixing the pressing plate to the knee joint. The pressing plate includes a bending side having a shape corresponding to that of the outer edge and/or the inner edge of the kneecap and two sides extending from the upper end and the lower end of the bending side in a direction facing to the knee joint to form a chevron rear end about the space of the knee joint.本發明揭示一種膝用支撐裝置,包含一按壓板,用為於膝關節之外側且/或內側而按壓膝關節;以及一固定部,將該按壓板固定於膝關節,其中該按壓板係具有:一按壓板彎曲邊,其形狀為對應於膝蓋骨之內側端緣彎曲的邊且/或外側端緣彎曲的邊;以及自該按壓板彎曲邊的上端部及下端部而向膝關節之後側,且在膝關節裂隙周緣部分形成山形之後端部的二個邊。1...膝用支撐裝置2...按壓板21...按壓板彎曲邊22...上端部23...下端部24...後端部25...邊26...邊3...固定部31...上帶體32...下帶體33...中間帶體34...固定構件