Moisture sensor mounting and drilling device

The invention relates to an auxiliary device for installing a moisture sensor on a hard soil body, in particular to a drilling device for installing a moisture sensor. The drilling device for installing the moisture sensor comprises an outer support, a rotary drilling system and a lifting system. The rotary drilling system is movably connected with the outer bracket through the lifting system; therotary drilling system at least comprises a rotary drilling system shell, a plurality of sets of quick drill bit connectors are arranged at one end of the rotary drilling system shell side by side, adriving device is arranged at the other end of the rotary drilling system shell, and the driving device is in transmission connection with the plurality of sets of quick drill bit connectors througha driving shaft and a gear set. Three parallel and synchronous rotary drilling drill bits with the same length and the diameter slightly smaller than that of probes are used for drilling holes in hardundisturbed soil, then the