A knowledge graph is the key technology for the transition of cognitive intelligence and a powerful assistant for the digitalization of companies. Multi-source heterogeneous data is intelligently extracted and consolidated to create a knowledge control center. Through the mapping of entities, concepts and relationships, the machine learns how to use the data and extract knowledge that can accurately reflect the dynamics of the industry. Customized intelligent data applications based on knowledge graphs are created for customers to aid them in the intelligent upgrade of different service scenarios in industries such as government affairs, manufacturing, education, and general healthcare.