The utility model provides a skew of rock wool board is reported to police and correction mechanism, including audible -visual annunciator, contact switch, battery, recess no. 1, left side board, gyrowheel no. 1, gyro wheel no. 2, recess no. 2 and right side board, the battery sets up at the right side inboard, audible -visual annunciator passes through the bracing piece and installs at right side board up end, contact switch installs at right side board left end face, and this design has increased the utility model discloses the function that the skew was reported to the police to cotton board, edge on the left of the assembly line up end is installed to the left side board, the right side board is installed in assembly line up end right side edge, recess no. 1 is seted up at left side board right -hand member face, gyro wheel no. 1 assembly is in recess no. 1, recess no. 2 is seted up at right side board left end face, gyro wheel no. 2 assembly is in recess no. 2, and this design isavoided cotton board skew back motion to be obstructed and is caused the emergence of the mutual extrusion condition, the utility model discloses rational in infrastructure, the function is various,and stability is good, and the reliability is high.