The utility model discloses a soil sampling device for mining exploration. Drill rod, spiral blades are arranged on the drill rod, a conical bit is arranged below the drill rod; connecting sleeve is arranged at the upper end of the drill rod, the drill rod and the connecting sleeve are fastened and connected through a fastening block; a first pipe sleeve is fastened to the upper end of the connecting sleeve, a fastening sleeve is arranged at the lower end of the first pipe sleeve, a discharging hopper is arranged on the second pipe sleeve, an arc-shaped plate is arranged at the upper end of the second pipe sleeve, a first fastening strip is arranged at the lower end of the arc-shaped plate, a second threaded hole is formed in the first fastening strip, and a second fastening strip is arranged at the upper end of the fastening sleeve; the drill rod is used for taking soil from the lower portion, the soil is conveyed into the connecting sleeve through the spiral blade, the soil is further conveyed into the second pipe sleeve and falls out of the discharging hopper, and soil taking is completed.