The invention relates to an anti-grouting-pipe-explosion monitoring and early warning system and a using method thereof. The system comprises a first pressure measuring device which is arranged at the grout outlet of a grouting pump and used for measuring a first pressure value of grout at the outlet of the grouting pump, a second pressure measuring device which is arranged at the inlet of a grouting pipe and used for measuring a second pressure value of grout at the inlet of the grouting pipe, and an early warning device which has a shell for accommodating an early warning unit, wherein the first pressure measuring device and the second pressure measuring device are pressure gauges, each pressure gauge is equipped with a threshold input device, and the early warning device sounds an alarm when the first pressure value or the second pressure value is greater than a first threshold.