Du Yun, female, doctor, chief physician, professor. He is the director of cancer examination center (cytology Department) of the fourth hospital of Hebei Medical University, a member of international society of cells, a member of cytology group of pathology branch of Chinese Medical Association, a member of cervical cancer prevention and control research professional committee of maternal and Child Health Research Association, a member of cytology group of Chinese pathologist Committee, and a standing deputy leader of cytology group of pathology branch of Hebei Medical Association.

From 1986 to 1991, he studied in the medical department of Hebei Medical University and obtained his bachelor's degree; from 2000, he began to work in cell pathology; from 2002 to 2005, he studied in Hebei Medical University for doctor's degree in tumor pathology. In 2007, he was promoted to chief physician and professor. He has successively undertaken 5 provincial projects, won 2 third prizes for scientific and technological progress of Hebei Province, and 2 first prizes of the Department of health. He has published more than 60 papers and 3 SCI papers in national core journals. He has been engaged in cytopathology for more than 10 years, and his technical operation and diagnosis level are at the leading level in the province. In Hebei Province, we took the lead in the detection of gene mutation and circulating blood tumor cells using cytological samples.