Landslide early warning device and use method thereof

The invention relates to a landslide early warning device and a using method thereof.The landslide early warning device comprises an anchor rod, a monitoring circuit and an alarm circuit, the anchor rod is provided with a slope facing face, a left side face and a right side face, the included angle between the left side face and the slope facing face is an obtuse angle, and the included angle between the right side face and the slope facing face is an obtuse angle; a slope facing surface pressure sensor and a soil water content sensor are arranged on the slope facing surface, a left side surface pressure sensor is arranged on the left side surface, and a right side surface pressure sensor is arranged on the right side surface; the input end of the monitoring circuit is electrically connected with the output end of the slope facing pressure sensor, the output end of the left side face pressure sensor, the output end of the right side face pressure sensor and the output end of the soil water content sensor, and