Professor Rao’s research has focused on the three-dimensional structures and functions of proteins and viruses associated with emerging and re-emerging infectious diseases, together with the development of structure-based approaches to therapeutic discovery. Through national research programmes, including the National Key Research and Development Programme project Protein Machinery and Life Process Regulation and the former National 973 Programme Protein Project, his research group has investigated the atomic structures of a range of pathogenic viruses, including SARS-CoV-2, SARS coronavirus, avian influenza virus, hepatitis A virus, herpesviruses, and African swine fever virus. His work has also addressed energy and metabolite transport, drug-resistance mechanisms, and cell-wall synthesis in Mycobacterium tuberculosis, providing structural information relevant to antiviral and antibacterial drug discovery. He has authored more than 400 peer-reviewed publications, including 23 papers in Cell, Nature, and Science, and has received the Second Prize of the National Natural Science Award, the Chen Jiageng Science Award, the TWAS Trieste Science Prize, and the inaugural Tan Jiazhen Life Science Achievement Award. Through sustained research, scientific leadership, and international academic service, Professor Rao has contributed to connecting structural biology and molecular biophysics with the study of infectious diseases and the development of structure-based strategies for therapeutic intervention.