The complexity of telecommunication operation and management for network and service is increasing significantly due to evolving network architectures and service demands. To address this, knowledge graphs offer a structured approach to modelling domain knowledge and support intelligent application in telecommunication operation and management, such as fault diagnosis, service optimization, and network planning. The constructed telecommunication operation and management knowledge graph describes various concepts and their relationships in telecommunication scenarios. It forms a semantic graph that systematizes and interconnects knowledge in the field of telecommunication operation and management. It is required to outline process and detailed steps for building telecommunication operation and management knowledge graph to guide its construction in telecommunication operation and management scenarios. This Recommendation provides principles, process and typical use cases for the construction of telecommunication operation and management knowledge graph.