The invention discloses a city train steel spring floating track construction method for resolving the vibration, noise problems of train in railroad switch, which lays city railroad on a steel spring floating plate without slag bed, to reduce the vibration and noise, comprising that filling base, testing and arranging base mark and vibration insulator center point, grinding and repairing the surface of the filled layer of the insulator, laying insulated film, laying railroad switch, positioning and mounting an outer muffle of the insulator, bonding a floating plate steel bar network and anti-drop steel bars, adjusting the railroad switch, mounting a force cutter and a support template, pumping concrete to irrigate the floating plate bed, detaching mould of the concrete and maintaining, lifting up the steel spring floating plate.