Abstract: Take rock slope of open-pit to underground industrial site of Yanqianshan iron ore as the example,shotcrete technology in application of rock slope strengthening green of metallurgical mines,design request,construction steps,detailed operation technology of protective structure of different rock types and effect comparison before and after spray sowing are explained in detail,proves technology is reliable and has high popularization value.

Key words: Spray sowing technology, Structure design, Construction technology, Effect comparison