The present invention relates to a chain stabilizing device in a hyperthermo- therapeutic apparatus and a method of using the same. Instead of a conventional feeding means with a complicated structure, the present invention comprises a first hinge shaft with a simple structure, level control rods each of which has one end hingedly coupled to the first hinge shaft and the other hingedly coupled end, a second hinge shaft to which the other ends of the level control rods are hingedly coupled, and a hyperthermo-therapeutic unit support hingedly coupled to the second hinge shaft. At this time, thefirst hinge shaft has rollers installed at both side ends thereof and engaged with linear rails, while the hyperthermo-therapeutic unit support has rollers provided at both side ends thereof and rotatably engaged with curved rails. Accordingly, the present invention can simply comprise extremely minimal components, and the hyperthermo-therapeutic unit support can be moved also reciprocated in a linear direction while being moved in an upward/downward direction and, whereas the first hinge shaft is reciprocated in a linear direction.