Liu Jiajia, professor, scholar studying in Japan, tutor of master students. He has been engaged in medical immunology research for a long time and has high academic attainments in this field. He studied in Japan twice. The related papers of FK-506, a new immunosuppressant he studied, were published in the famous European magazine International Allergy and Immunology Achievements, and were exchanged at the19th Annual Immunology Conference in Japan, which laid a certain theoretical foundation for the application of FK-506 as a new immunosuppressant in clinical organ transplantation.