The essence of mine ventilation lies in utilizing ventilation power to continuously supply fresh air under-ground, dilute and remove toxic and rmful S, qoide a sale workO ng environment for C personnel. therebv ensuring safe and normal n+ ing operations. As production at the Paishanlou Gold gradually shifts to the Xinmin mining distriet, texi on system aces challe enges such as inst airflow short-circuiting and failure to meet operational I demands. Based on field airflow measurements and e production plans, a flank diagonal zoning ventilation system was proposed. Ventsim ventilation simulation so was employed to analyze the proposed system. Results demonstrate new ven on design significan TOves n efficiency, meets the expanded operational needs of the Xir ng district, and holds strong potential for broader application.