In order to reduce the production cost of nano titanium based functional materials, a production cost control method of nano titanium based functional materials based on DMAIC is proposed in this paper. The DMAIC (Define, Measure, Analyze, Improve, Control) model was used to analyze the production of nanoTi-based functional materials and define the main factors affecting the production cost of nanoTibased functional materials. The indicators for measuring the quali. The regression model was established to determine the main factors affecting the rod content and yield of nanoTi-based functional materials.The appropriate experiments were used to determine the best control conditions and to improve the technical parameters. Through the control methods of monitoring, coordination and improvement, the phased results are consolidated and improved. The experimental results show that the quality and yield of nanoTi-based functional materials are significantly improved after using this method, and the cost reduction of each production link is also significantly higher than that of the comparison method.