Abstract: Mirador Copper Mine is a large porphyry copper mine being developed in Ecuador，with more than 4 million tons of copper resources. How to ensure the full utilization of mineral resources is an important topic affecting the economic benefits and sustainable development of the mine. The ore grade con⁃ trol process and application mechanism are described. Through standardized sampling and laboratory analy⁃ sis，professional mining software is used to build an accurate bench ore body entity model，and the bench mining model is dynamically updated and managed. The ore loss and dilution rate is effectively controlled， which also provides an accurate geological basis for the preparation of short-term production plans.

Key words: grade control, secondary orebody modeling, mining model, mining schedule