Full-automatic stone ground cleaning, refurbishing, crystallizing and maintenance machine

The invention provides a multifunctional full-automatic stone maintenance device suitable for cleaning, refurbishing, crystallizing and maintenance of a stone (including marble, polished tiles, vetrified tiles, terrazzo and other hard matter) ground. A grinding unit is combined with a walking ground plate, and the device is controlled by a numerical control center to automatically move according to a set track to achieve cleaning, refurbishing, crystallizing or maintenance of the ground. An automatic drug adding system or an automatic water suction system can be additionally arranged on the device. The device is reasonable in design, a person can operate multiple devices at the same time, work efficiency can be greatly improved, labor intensity of workers can be reduced, labor cost is lowered, and ground maintenance cost can be saved for users.