Mortar ground grinding device

The utility model relates to the technical field of mortar floor treatment, in particular to a mortar floor grinding device. Comprising a main mounting disc, a power output unit is arranged in the main mounting disc, and the output end of the power output unit is in transmission connection with a grinding unit; the grinding unit comprises a grinding disc; the grinding disc is mounted at the bottom of the power output unit; the central axis of the grinding disc coincides with the central axis of the main mounting disc. The bottom of the grinding disc extends to the outer part of the main mounting disc, and a plurality of groups of fixing seat clamping grooves are uniformly distributed; the top of the fixing base clamping groove communicates with an inner threaded hole, an outer threaded head is in threaded connection with the interior of the inner threaded hole, a grinding head fixing base is installed at the bottom of the outer threaded head, and the side wall of the grinding head fixing base abuts against th