Metal net rock wool composite board outer wall external thermal insulation system

The utility model provides a metal net rock wool composite board outer wall external thermal insulation system, and belongs to the field of building construction. According to the technical scheme, the rock wool composite board structure comprises a wall body and a rock wool composite board arranged on the wall body, a metal mesh and a facing layer are sequentially arranged on the outer side of the rock wool composite board, the rock wool composite board is fixed to the wall body through anchor bolts, the metal mesh is arranged on the side face of the side, away from the wall body, of the rock wool composite board through connecting pieces, and a plurality of mounting through holes are formed in the rock wool composite board; the connecting piece comprises an installation inserting piece arranged in the installation through hole, annular pressing plates are arranged at the two ends of the installation inserting piece, and the annular pressing plates abut against the metal mesh. The inner rock wool board has t