Data center is one of the important directions of the New Infrastructure initiative, and the energy efficiency of the data centers has always been a focus of research. Park Energy Internet (PEI) is a system that emphasizes the consumption of clean energy and the promotion of energy efficiency. The “generation, grid, load, storage, and charging” coordination technology of PEI will be the key to improving the energy efficiency of data centers. So exploring the key technologies and development modes of PEI in data centers will be significant. However, the current research on data centers and PEI is independent to each other. Therefore, this study analyzes the integration of data centers and PEI, and discusses the key technologies in equipment planning, DC power distribution, waste heat recovery, multi-energy dispatch, load management, and energy storage dispatch. On this basis, we proposes the infrastructure framework of the PEI in data centers, explores its business models, and prospects the priority of further development. Finally, suggestions for the further development of the PEI in data centers in China are proposed; technology integration, pilot practice, and policy support are the key elements which promote its development.