To provide a pressure-adjustable rehabilitation tool, capable of solving a problem with conventional techniques wherein they are inappropriate for training in some cases since a constant load of (power of repulsion) training is added even to parts with reduced function of joints due to deterioration of joints or muscles by aging.

The tool for rehabilitation is provided with a function of sending air or other gas or fluid pressure through a tube 2 to an airbag 1 manually or electrically to inflate the airbag 1 as the tool is installed on the joints as training objects. Fluid pressure is thus utilized for promotion of opening, closing and bending motion of joints in the whole movable range.