The invention relates to a joint bracket adjustable device.The adjustable device of the joint bracket includes a base, two connecting pieces and a certain position mechanism.The base has a center and two opposite and spaced side walls, at least one of which is penetrated with a plurality of tooth recesses.Each of the connecting pieces is provided for connecting with the limbs of the human body.The positioning mechanism has a fixed part between the two side walls, and at least an adjustment mechanism connected with the base, each of which has a positioning component for external operation and can move around the center, and the positioning component and the fixed part are magnetic and can absorb the other, so that the positioning component has a trend of moving toward the center.本創作關於一種關節支架可調裝置。該關節支架可調裝置包括一基座、二連接件及一定位機構。該基座具有一中心及二相對且間隔之側壁，至少一該側壁貫設有複數齒凹。各該連接件供與人體之肢體相連結。該定位機構具有一設於該二側壁之間的固定件、及至少一連接該基座之調整機構，各該調整機構具有一供外界操作而可繞該中心移動的定位組件，該定位組件與該固定件至少其中一者具有磁性而可磁吸另一者，進而使該定位組件具有朝向該中心移動之趨勢。
