Senior clinical nutritionist in Beijing Military Region General Hospital. From 1992 to 10, he was transferred to the General Hospital of Beijing Military Region by field troops. 1995 to 10 began to study disease nutrition catering with Professor Li Ruifen, a famous clinical nutritionist in China and former director of the Nutrition Department of the General Hospital of Beijing Military Region, and was responsible for the management of clinical dietotherapy in the cadre ward.

Yu Renwen is mainly responsible for the nutritional rehabilitation of various senile diseases, nutritional metabolic chronic diseases (hypertension, hyperlipidemia, diabetes, gout and other diseases), postoperative patients and cancer patients in the cadre ward of Beijing Military Region General Hospital. In addition, Yu Renwen is also the editorial board member of the new edition of Nutrition Caterer in Ministry of Human Resources and Social Security, the executive director of Beijing Dietitians Association, and the expert member of China Food and Nutrition Committee.