The components of the New Crown vaccine in our clinical application do not react adversely with food, and cold drinks will not affect the preventive effect of the vaccine. Therefore, it is possible to eat cold drinks after the New Crown vaccine, but doctors do not recommend eating cold drinks after the New Crown vaccine. First of all, there may be different degrees of adverse reactions after the vaccination, such as redness, swelling, pain, soreness and hardness of the vaccination site, as well as nausea, vomiting and fever. Eating cold drinks at this time may induce or aggravate adverse reactions, such as diarrhea and abdominal pain, which in turn may cause systemic symptoms, such as malaise, fever, myalgia, headache, etc. Secondly, for people with gastrointestinal diseases, the elderly, children and other weaker groups, eating cold drinks is also very likely to cause symptoms of diarrhea and abdominal pain, which may appear to mask adverse reactions to the vaccine. Therefore, it is recommended that people should eat a light and easy-to-digest diet before and after receiving the new vaccine, eat more fresh vegetables and fruits, avoid smoking and drinking alcohol, and avoid eating cold, spicy, irritating and allergy-prone foods to avoid discomfort.