Dr. Xu graduated from Peking Union Medical College in 1970. He is a professor of Histology and Embryology. He is a tutor of doctorate graduate student. He trained 13 doctorate graduate students. He was the former chairman of Dept. of Anatomy, Histology and Embryology in Peking Union Medical College. He is associate editor of Acta Anatomica Sinica. He was the former vice chairman of a board of directors of the Society of Anatomy in Beijing. He was a member of The 5th Degree Committee of Peking Union Medical College. He is engaged in scientific research on extracellular matrix biology.