Abstract: An open pit mine is a multi一metal hillside open pit mine with a design stripping ratio of 4. 5m³∕t. In the process of production management，the target of the mine production is mainly based on thecompany's production and management goals，production costs and mineral processing capacity. The output of ore is roughly constant，and the amount of the stripping is often affected by the influence of the concentrate sales price，the profit of the company and the cost of mining，and the mining production is often in a passive situation. Short一term increase or decrease the amount of stripping production will reduce the utilization of equipment so that increase production costs，and make the production of organizational complexity. Therefore，production stripping ratio must he optimized and controlled to achieve the purpose of rational exploitation.   According to the concept of equivalent production stripping ratio proposed in ref-
erence(ZHANG Guigun，WANG Dajun.  Application Study of Equival ent production Stripping Ratis in the Productisn of Open pit Mine[J]. Coou Technology of Northeast China，1997(6):11一12)，combined with the actual production of the mine，the equivalent production stripping ratio is calculated and used as the reference for the company and other similar companies. This can reduce mine production costs，ensure mine health and sustainable development.

Key words: production stripping ratio, stripping, open-pit mine, the production index