Dongxiao Sun is a professor of Animal Genetics and Breeding Department of the College of Animal Science and Technology, Beijing Agricultural University. She graduated from Hebei Agricultural University in 1993 with a major in animal nutrition. In 1996, she received a master’s degree in animal genetics, breeding, and reproduction from the Graduate School of the Chinese Academy of Agricultural Sciences. In 1999, she received a doctorate in animal genetics, breeding, and reproduction from China Agricultural University. In July 1999, she joined the College of Animal Science and Technology, in China Agricultural University, and served as a lecturer, associate professor, and professor. She was a visiting scholar at the University of Virginia in the United States from January 2005 to September 2006. She is the deputy secretary-general of the Animal Genetics and Breeding Branch of the Chinese Society of Animal Husbandry and Veterinary Medicine, the executive director of the Livestock and Poultry Genetic Markers Branch, and the director of the Cattle Breeding Branch. In 2007, she was selected as a New Century Excellent Talent of the Ministry of Education.  Her research interests include animal molecular quantitative genetics and dairy cattle breeding, including dairy cattle genomic selection technology and analysis of the genetic mechanism of important traits.