Ruthenium based materials with rapid reversible redox process, a variety of valence options and flexible environmental adaptability have been aroused researcher's great interest in the development of supercapacitors. This review provides a comprehensive introduction to the application of ruthenium based materials and their composites in supercapacitors, focusing on their synthetic methods, the selection of raw materials, the control of conditions such as temperature, electrolyte, and pH, as well as their electrochemical performances.