Food is people’s first necessity and catering has everything to do with the health of human body. This online course takes Hangzhou as a sample city to explore the secrets of Chinese cuisine. As a famous historical and cultural city, what are the famous food with rich cultural connotation in Hangzhou? How is Hangzhou famous Xiaolongbao made? What kind of sparks will Chinese famous chefs and foreign friends collide with? In addition, from the perspective of health care, this online course analyzes the health concepts such as "food and medicine have the same origin" and "food supplement", and intends to provide suggestions for people's diet health problems under the epidemic situation.