The steel pin type is a kind of stainless steel nails to fix the stone panel. The structure of the stone curtain wall is stable and has a long service life. The steel pin connection of the stone curtain wall is to drill holes on the upper and lower sides of the stone. The steel pins installed on the connecting plate are inserted into the holes, and the connecting plate is connected with the structural system, so that the stone plate is fixedly installed on the structural system.