The invention provides an LED (light emitting diode) road surface indicating lamp system, which comprises a plurality of LED luminous lamps, a preset number of sensors and a single controller, wherein the LED luminous lamps are respectively arranged along one of two parallel lines. When one of the preset number of sensors senses that the gravity or the pressure exceeds the threshold, the sensor sends turn-on signals to the controller, and when the controller receives the turn-on signals, the controller controls all LED luminous lamps belonging to the same LED luminous lamp group as the sensor sensing that the gravity or the pressure exceeds the threshold to illuminate. When one of the preset number of sensors senses that the gravity or the pressure is lower than the threshold, the sensor sends turn-off signals to the corresponding controller, and when the controller receives the turn-off signals, the controller controls all LED luminous lamps belonging to the same LED luminous lamp group as the sensor sensing that the gravity or the pressure is lower than the threshold not to illuminate.