The invention frost by heating by that possible, direct contact with the heating wire and fluid to a built-in heating coil in the interior of the flowing fluid pipe equipped with a heating coil simply of course is to prevent any external shock or damage to the advance in the pipe relates to a heating wire embedded frost protection device so as to improve the efficiency of the protection, is arranged so that each outlet, the fixed spiral portion formed pipe and, provided on the inside of the pipe and the one side and the other side in both end outer side by tapping and an elongated elliptic section is provided with a heat insulating material and the finishing material; Above is fastened to the fixed spiral tube of the pipe fastening formed on the inner tube fastening area of ​​a negative spiral additional internal side, the packing portion inside the insertion space on the other side, the gland and entered into the spiral portion is formed, engaging with the hot wire through holes in the inner middle nipple jaws are formed as well as the formed tapered toward the rear of the locking jaws; Located in the center of the nipple pipe fastening recess and at the same time fixing the jaw of the hollow heating coil is formed integrally fixed to the engaging shoulder of the nipple and a rear end support bar; And a rubber packing and a washer for preventing the deformation of the rubber packing formed in a conical shape to correspond to the taper of the nipple is formed with a hot-wire and hot-wire insertion hole in the same shape in the central portion; It is formed on the nipple tightening spiral fastened to the outer additional gland tightening the spiral portion of the nipple, the gland hot wire through hole formed in the central part; it consists of.