NOVELTY - The livestock excretion heating system comprises side plate flanges connected or installed in a steam supply pipe and a drain pipe, a heat-exchanger built connected or installed in the side plate flanges, and heat pipes including a front header equipped with an inlet tube and a rear header equipped with an outlet tube. A base frame is installed in the heat-exchanger built for supporting the heat-exchanger built. The front header passes the livestock excretion to the rear header via the heat pipes. The rear header heats the livestock excretion at high temperature.    USE - The livestock excretion heating system is useful for producing a liquefied fertilizer.    ADVANTAGE - The livestock excretion heating system rapidly and affordably produces the liquefied fertilizer in winter season.    DETAILED DESCRIPTION - The livestock excretion heating system comprises side plate flanges connected or installed in a steam supply pipe and a drain pipe, a heat-exchanger built connected or installed in the side plate flanges, and heat pipes including a front header equipped with an inlet tube and a rear header equipped with an outlet tube. A base frame is installed in the heat-exchanger built for supporting the heat-exchanger built. The front header passes the livestock excretion to the rear header via the heat pipes. The rear header heats the livestock excretion at high temperature. A steam control valve is connected or installed in an inner portion of the front header. A steam tube is provided with the steam supply pipe. A boiler control valve and a boiler input tube are connected or installed in an inner portion of the front header. A steam scattering plate disperses steam to the inner portion of the heat-exchanger built, and is arranged in a lower part of the steam supply pipe. The heat-exchanger built is fixed with the steam scattering plate. Holding fixtures in which the steam scattering plate undergoes fused deposition in an inner surface of the heat exchanger built. A coupling flange is formed in an outer periphery of the rear header and the front header. The coupling flange and the side plate flanges are passed through a mutually interlocking member.