1985 ~ 1993 as a resident in internal medicine; 1993 was promoted to attending physician of internal medicine; 1997 was promoted to deputy chief physician of gastroenterology, and 1998 obtained the qualification of associate professor. In the same year, he obtained the qualification of tutor for master students of gastroenterology in Lanzhou Medical College. 1998 Up to now, he has served as the deputy director of the Department of Gastroenterology and the deputy director of the Department of Diagnosis in the First Affiliated Hospital of Lanzhou Medical College, and was named the young and middle-aged scientific and technological leader of the Health Department of Gansu Province. In 2000, he was promoted to chief physician of gastroenterology. In the same year, he studied for a doctorate in the Graduate School of China Academy of Sciences in 200 1. In 2003, he served as the director of the Department of Gastroenterology and the director of the Institute of Diagnostics in the First Clinical Hospital of Lanzhou University.

Since graduation from 1985, I have been engaged in the first-line clinical work of 18 internal medicine, with digestive specialty as the main direction. Work hard, study business, and have strong professionalism. Systematically learn and master the diagnosis and treatment of internal medicine, especially digestive system diseases; He has accumulated rich clinical experience and can skillfully diagnose and treat difficult and critical diseases in his major; Familiar with the diagnosis and treatment of digestive tract diseases under endoscope. Accumulate and summarize clinical experience in practice, enrich knowledge and increase talents. After systematic doctoral training, he has strong innovative thinking and high-level scientific research ability. The scientific research projects and papers completed and developed in recent years have high academic level and value, and have been affirmed and praised by famous experts in the same industry. At the same time, it undertakes the tasks of clinical teaching, advanced student training and postgraduate guidance. Train 20 graduate students.

In view of the close relationship between Helicobacter pylori and gastric precancerous lesions and gastric cancer, the clinical study of Helicobacter pylori and gastroduodenal diseases was carried out. Combined with the characteristics of high incidence of gastric cancer and esophageal cancer, the pathogenesis, clinical diagnosis and treatment were systematically studied. Led the department staff to carry out the expansion treatment and endoscopic stent implantation of benign and malignant esophageal and cardiac stenosis in the hospital, which alleviated the pain of patients and improved their quality of life; Endoscopic hemostatic forceps is used to treat gastrointestinal bleeding and endoscopic electrocoagulation and resection of gastrointestinal polyps. At the same time, the clinical study of portal hypertensive gastropathy was carried out and some results were obtained.

In recent years, he devoted himself to the clinical and basic research of gastroenterology, especially in the medical and endoscopic diagnosis and treatment of gastrointestinal diseases. The endoscopic diagnosis and treatment of early digestive tract tumors were systematically studied, and the intraoperative positioning tube was carried out with relevant departments, which made unique achievements in endoscopic treatment of malignant stricture of digestive tract. Among them, the epidemiological research and endoscopic diagnosis and treatment of esophageal cancer and gastric cancer have established exchanges and cooperation with Hong Kong, Australia, Japan and other countries and regions.

Undertaking scientific research projects: completed 9 national and provincial scientific research projects and won 7 awards. In recent five years, he has published more than 20 academic papers in academic journals at home and abroad, including 4 SCI papers and participated in writing 4 monographs. At present, the projects undertaken include the western light project of Chinese Academy of Sciences and the National Natural Science Foundation project.