Abstract: Objective To carry out the visually analysis on the literature of nutrition and food safety knowledge investigation research in the past 33 years by the literature metrology method,summarize the research status,hot spots and development trends in this field. Methods The China National Knowledge Network（CNKI） literature database was used as the data source,"topic=nutrition knowledge' OR 'food hygiene knowledge' OR 'food safety knowledge' AND 'investigation'" was used as the subject search term and the time was set from January 1,1990 to May 31,2022. The CiteSpace visual analysis software was used to analyze the number of publications,research institutions,core authors and key words distribution of literature in this field. Results A total of 2 280 articles were included. The annual number of articles published has gradually increased. After 2007,the average annual number of articles published was over 100. Sichuan University（30 papers）,Chinese Center for Disease Control and Prevention（15 papers）, and the ZENG Guo（13 papers） published the most papers. The field focuses on nutrition, food safety, knowledge,attitude, behavior, eating behavior, health education, KAP, and food practitioners. The research frontier covers three aspects：knowledge, attitude, behavior survey, food-related population, and intervention measures. Conclusions Researchers and institutions are connected but not closely. There is no effective link between various investigations and studies. The visual analysis can clearly show hot spots and frontiers in the field of nutrition and food safety knowledge level investigation. However,researchers still need to continue in-depth research in combination with the changes of the society,so as to better promote the public to form a good cognition and a healthy lifestyle.

Key words: Food safety, Nutrition, Knowledge research, CiteSpace, Visual analysis