In order to achieve more accurate query and management of the knowledge of CNC machine tool optimization design,Eclipse was used as the integrated development environment,a knowledge base management platform for optimal design of CNC machine tools based on Java Web was developed by using Tomcat server,MySQL database,Spring,SpringMVC,MyBatis framework and other framework technologies.The platform was divided into a front desk exclusively for users and a backstage exclusively for administrators,and a B/S structure was used to reflect the advantages of network data informationization.The results show that by using the platform,the efficiency of CNC machine tool optimization design knowledge management can be improved while the problem of basic CNC machine tool optimization design knowledge data management can be solved,a better CNC machine tool optimization design knowledge data query environment can be provide to users,and the retrieval and application of design knowledge can be effectively realized.Through two actual application cases,the feasibility and practicability of the designed platform were proved.