The utility model discloses an adjustable knee joint bends and stretches ware, including the gasket, one side of gasket is equipped with smooth room, wherein, be equipped with in the gasket and protect the groove, it is equipped with first frenulum to protect the groove both sides, the smooth indoor hob that is equipped with vertical setting, the top of hob extends to the smooth outdoor rotatory hand that is equipped with. Beneficial effect: protect groove and the effect of first frenulum down through gasket cooperation, be convenient for fixed to patient's shank, and under the effect of slideand second frenulum, the be convenient for bending of patient's knee joint, additionally, medical personnel pass through to adjust rotatory hand under the effect of spiral hole cooperation hob, be convenient for cooperate the slide bar to slide, the feasible bending angle who adjusts patient's knee joint, and adjust be convenient for fixed to the slide of hand cooperation fixture block, make easyand simple to handlely, the cost is low, and the practicality is strong, and the efficiency of the bending of the effectual improvement of ability regulation patient knee joint.