Since the concept of relational energy was introduced, scholars have made numerous studies and contributions to its development. However, there has been no dedicated literature review. This paper reviews the concept, dimensions, measurement, and empirical research of relational energy, and points out that future research can focus on developing localized measurement tools of relational energy, exploring the cross-level impacts and dual effects of relational energy, and using follow-up studies, diary methods and physiological indicators to measure relational energy.