According to official website's inquiry, 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 the General Hospital of Beijing Military Region. In addition, he also served as the editorial board member of Ministry of Human Resources and Social Security's new edition of Nutrition Catering, the executive director of Beijing Dietitians Association, and the expert member of China Food Nutrition Committee.

He also served as a special guest of nutrition in the health columns of more than 30 TV stations in China, such as CCTV, Beijing TV and Liaoning TV, and recorded about 600 programs on diet health care, nutritional diet therapy and food nutrition. Yu Renwen's more than 300 popular science articles on nutrition have been published by more than 40 domestic newspapers all the year round, and he has written popular science books such as Nutrition Moon Meal and Beauty Can Eat.