This paper introduces the system configuration and operational status of a 5 000 t/d cement clinker production line that was converted from a vertical mill system to a roller press raw material finish grinding system. Due to adverse factors such as high material moisture content, low preheater exhaust gas temperature, severe caking in the stable flow bin, and low separation efficiency of the powder separator, the roller press raw material finish grinding system deviated from the design targets in terms of output and power consumption during the initial production phase. By implementing optimization measures such as enhancing insulation treatment, installing dust collection pipelines, improving the feeding chute, reasonably selecting the roller press control mode, adding bypass hot air, increasing the hot air temperature entering the V-type powder separator, widening the feed device discharge port, and improving material fluidity the average hourly output of the raw material finish grinding system increased by 100~120t/h compared to the original vertical mill system, and power consumption decreased by 4~5kW·h/t, achieving the goal of energy saving and consumption reduction.