Building indoor decorative plate connecting device convenient to disassemble and replace

The utility model provides a building indoor decorative plate connecting device convenient to disassemble and replace. The device comprises a decorative plate, a mounting hole, a holding ring, a fixing column, an inserting column, a rotating rolling ring, a spring, a rotating wheel, a mounting frame, a rack plate and a gear; mounting holes are formed in left and right end surfaces of the decorative plate; fixed columns are fixed on the upper and lower sides in the decorative plate; holding rings are mounted on the front sides of the annular side surfaces of the fixing columns; the rear side ofthe holding ring is connected with a rotating rolling ring; mounting frames are fixed on the left and right sides of the rotating rolling ring; gears are mounted on the right end surfaces of the mounting frames; by means of the design, the problem that an original building indoor decorative plate is inconvenient to disassemble and replace after being installed is solved, and the building indoor decorative plate is reason