Abstract: This paper firstly expounds the related concepts of machine learning and knowledge map, and their applications in the construction of knowledge base and the positions in the industry. Then introduces the common model of machine learning combined with the typical algorithm. To increase the relevance of industry knowledge in the knowledge base and reduce the redundancy, this paper introduces a new technology related industry knowledge map and its construction method, thus led to the study of the method of building knowledge base for industry, and combined with intelligent knowledge base shows the innovative application of knowledge map, using the knowledge map to provide technical support for the search and recommendation feature of the knowledge base, at the same time through knowledge map shown more visually for the domain knowledge. Finally, this paper further describe the role of machine learning and knowledge map play in industry knowledge.