Connecting structure of flame-retardant rock wool board

The utility model discloses a flame-retardant rock wool board connecting structure which comprises a flame-retardant rock wool board, a cross-shaped piece is fixed to the bottom of the flame-retardant rock wool board, the end of the cross-shaped piece is provided with a connecting rod and an inserting hole which are matched with each other, and the connecting rod and the inserting hole are located at the ends, away from each other, of the cross-shaped piece respectively. The other end of the connecting rod is fixed with the cross-shaped piece of the adjacent flame-retardant rock wool board through a bolt, one end, far away from the bolt, of the connecting rod is detachably connected with the cross-shaped piece, and a reinforcing mechanism is arranged around the cross-shaped piece; the adjacent flame-retardant rock wool boards are connected through the arrangement of the cross-shaped pieces matched with the connecting rods and the inserting holes, the structure is simple and clear, assembling is convenient, th