Provided is a vertical motion adjuster for a thermotherapy device capable of simultaneously accomplishing a pressing acupressure therapy effect and a pushing acupressure therapy effect. The vertical motion adjuster for the thermotherapy device includes a conveyance unit including a movable member configured to move along a mat, a support unit having one side hinged with the conveyance unit, and an elevation unit installed between the conveyance unit and the support unit and configured to raise the other side of the support unit in an arc shape. Accordingly, since the pressing acupressure therapy effect and the pushing acupressure therapy effect can be simultaneously accomplished as a moxibustion device is raised according to movement in an arc shape, a thermotherapy effect as well as an acupressure therapy effect through the moxibustion device can be improved.