High-precision geological exploration drilling rig

The utility model relates to the technical field of geological exploration, in particular to a high-precision geological exploration drilling rig. Comprising a base and a lifting device used for controlling a drilling device and a displacement device to horizontally move, the drilling device comprises a main shaft, a drill bit, a feeding port and a rotary driving device, the main shaft is of a hollow structure, the drill bit is used for drilling the ground, the feeding port is used for collecting soil, and a sampling device is used for sampling the soil; the angle adjusting device comprises gradienters, a telescopic device and supporting legs, the first gradienter is used for measuring the transverse levelness, the second gradienter is used for measuring the longitudinal levelness, and the telescopic device is matched with the gradienters to adjust the levelness of the base, so that the drilling precision is improved; according to the high-precision drilling sampling device, the technical problem of high-prec