A massage device capable of applying favorable pressure stimulation owing to expansion and shrinking of air bags irrespective of thickness of portions to be massaged such as legs or arms. The massage device has supporting bodies, strap bodies made of pliable material that are attached to the supporting bodies at their ends to form U-shaped sections, air bags provided at inner surfaces of strap bodies for receiving portions of a human body such as legs or arms to be massaged, and an air supply means for expanding and shrinking of the air bags. Upon locating portions to be massaged on the strap bodies, the strap bodies assume shapes that fit along the shapes of the portions of the body to be massaged to thus support the portions to be massaged on the strap bodies. Pressuring stimulation can then be applied to the portions to be massaged by making the air bags perform expansion and shrinking.