At present, in the electric power industry, the power plant’s supervision and management of the service state of power pipelines remains at the static stage, by manual work. On one hand, information control is incomplete and untimely, which does not meet the requirement of security production. On the other hand, the traditional digital software has cumbersome operation, lack of function and attention to maintenance information. In view of the above problems, a 3D power pipeline system design based on a digital twin five-dimensional model is proposed. Firstly, a sketch modeling and parametric designing method is used for 3D pipeline reconstruction to quickly realize the construction of a virtual entity and intuitively display the real scene of the system. Then, a smart management technology is utilized to monitor the operation data, predict the security state of pipelines, and integrate physical and virtual information. Finally, a prototype with a concise interface and practical functions is implemented. After being used in actual electric factories, this system initially shows improvement in the efficiency of service and security management of power pipelines.