Soil sampling device for geochemical exploration

The invention discloses a soil sampling device for geochemical exploration, which relates to the technical field of geochemistry and comprises a moving vehicle, a drilling assembly and a distance measuring assembly. During use, when the drill bit makes contact with the ground, the two first forward and reverse motors are suspended, the original distance value between the drill bit and the connecting block is measured through the infrared distance meter, the original distance value is transmitted to the data collector to be recorded and stored, the two first forward and reverse motors continue to be started, and the drill rod and the drill bit continue to be driven to move downwards; when the drill bit drills into the soil, after the drill bit drills into a certain depth, the two first positive and negative motors are paused again, the change distance is measured again through the infrared distance meter, and a worker can visually see the difference value between the original distance value and the change dist