In　order　to　study　the　performance　of　electric　cable　road　heating　system,　the　author　established　an　electric　road　heating　apparatus　to　measure　the　temperature　distribution　and　temperature　ascending　rules　on　the　internal　and　upper　surface　of　testing　structures,　and　then　investigated　the　power　consumption　and　engineering　application　for　electric　heating　cable　paved　on　the　asphalt　and　concrete　roadway　in　Beijing.　The　results　show　that　weather　conditions　(especially　the　temperature)　are　the　main　factors　to　influence　the　snow　melting　effect　of　electric　heating　cable.　The　range　of　power　consumption　per　square　meter　from　250　W　to　350　W　can　meet　the　requirement　of　melting　snow　and　preventing　freezing　for　roads　and　streets　surface　in　Beijing.