Abstract: The research on green transformation classification and technical configuration of open-pit building materials mines is carried out in view of the problems that the evaluation results of green mines are difficult to be directly transformed into transformation projects，the convergence of technical configuration of different construction foundation mines and the unclear priority of construction investment.Based on the data of non-coal mine development and utilization and green mine construction in Anhui Province in 2024，16 indicators are set up from four dimensions: resource development，environmental control，ecological restora⁃ tion and intelligent control. The fixed target normalization and equal weight scoring method are used to con⁃ struct a three-level discriminant method combining bottom line constraints，comprehensive scoring and short board identification，and three transformation levels of basic remediation level，collaborative upgrad⁃ ing and demonstration leading level are divided. Taking a large cement limestone open-pit mine in Fan⁃ chang District as an example，the application example is verified.The results show that the comprehensive score of the mine is 81.94 points，the bottom line constraint index is 78 points，and the intelligent control di⁃ mension score is the lowest，which is 72 points，which is judged as collaborative upgrading.According to this，the digital closed-loop，mining and stripping repair coordination and road dust dynamic control tech⁃ nology package are configured，and the comprehensive score of target measurement is 86.75 points. This method can transform the requirements of green mine construction into identifiable transformation levels，ex⁃ ecutable engineering units and iterative upgrading paths，which can provide reference for the sequencing of green transformation projects of open-pit building materials mines in Anhui Province and technical scheme compilation.

Key words: open-pit building materials mine, green mine, grading transformation, bottom line con? straint, comprehensive score, technical configuration