Abstract: The design and optimization of flavor distributing center in Longyan Cigarette Factory were introduced, the center was divided into blending section and storing section, the number of material barrel was 24, and the liquid material was transported with pumps or compressed air.Mass flow meters were used to ensure metering precision and fieldbus technology was applied in the control system.After optimizing, the number of mass flow meter was reduced from 24 to 8, pre-blending barrels were added, formulated solvents were used to clean flavor containers, the level measurement of liquid in storing barrel was improved.The system performs well in practice, with blending error less than 0.5%, higher automatization, and convenient in operation and maintenance.