The utility model relates to a tablet is marked in equipment operation, including the tablet body, the tablet body is including tablet body base and tablet body guard shield, all be equipped with the mounting hole on the four corners of tablet body base, the back of tablet body base is equipped with and is used for pasting the district with equipment is connected, it is equipped with magnetite or powerful glue in the district to paste, the openly center department of tablet body base is equipped with the bellying that is used for placing the sign, the side of tablet body base is equipped with the buckle button, the tail end of buckle button is equipped with the pothook, be equipped with the buckle with pothook matched with in the tablet body guard shield, with the bellying corresponds the position be equipped with glass on the tablet body guard shield. The side of tablet body base is equipped with the recess, the buckle button is installed in the recess. The utility model discloses simple structure, simple to operate, it is nimble swift to change the sign, has improved change efficiency greatly, has saved manpower and materials simultaneously, has practiced thrift manufacturing cost.