The invention provides a multifunctional ground early warning device for a high-speed
train. The device comprises a fixing box, a through wire hole, a box cover, an observation piece, a
train track, an adjustable warning alarm
tube structure, an adjustable shielding power generation base structure, a rotatable adjusting fixing base structure, a protective fixing box structure, a PLC, a power switch, a vibrating sensor, a lock cylinder, a wire protection tube, a first fixing tube, a wire fixing
insertion rod, a first connecting rod, a light reflecting plate, a first protective pad and a ventilation hole, wherein the through wire hole is formed in the upper portion of the right side of the fixing box. According to the device, a telescopic rod, a first U-shaped base, a rotating shielding baseand a
photovoltaic power generation plate are arranged, so that in the working process, the
photovoltaic power generation plate performs power generation, power is conveyed to an external power receiving device, and power generation work can be conveniently carried out; and the fixing box, the first connecting rod and the light reflecting plate are arranged, so that in the working process, lightsource can be reflected by the light reflecting plate, and the warning work can be conveniently carried out.