Base for geological exploration drilling rig

The utility model relates to a base for a geological exploration drilling rig, which comprises a bottom plate, four supports are symmetrically arranged on the bottom plate, each support is movably connected with a square rod, the supports are provided with movable holes matched with the square rods, and the supports are respectively and rotatably connected with a driving bevel gear and a driven bevel gear through bearings. The lower end of the square rod penetrates through the support and the driven bevel gear to be connected with a first screw rod, a square hole matched with the square rod is formed in the driven bevel gear, the first screw rod is in threaded connection with the bottom plate, and the lower end of the first screw rod penetrates through the bottom plate to be connected with a supporting plate. The drilling machine is convenient to use, is more convenient to adapt to field terrains, can guide the drilling rod during operation, can horizontally adjust the guide cylinder, reduces the phenomenon o