Abstract: A mild-temperature thermomassage instrument comprises substantially a hollow and truncated oval body made of Bakelite material and a hollow elliptic front head of aluminum. The truncated oval body includes a lower housing and an upper housing with a wiring plate having a button switch and power lines provided thereto being installed in the lower housing. A heating element, which comprises a refractory core rod with an electric resistance wire wound around the outer surface and mica material wrapped thereon, and a thin and grilled copper thimble covered around the finished core rod and secured thereto, is positioned in a closed space formed within the hollow section of the elliptic front head coupled with the truncated oval body at one end through a Bakelite lining ring, so that, by the special oval structure and the mild-temperature function, this instrument is very suitable for hand manipulation in applying hot compress and thermal massage on all parts of the human body.