It is recommended to eat spicy food at least 3 days after the vaccination, and if the vaccinated person has poor physical condition or allergy, it can be postponed for another week. Eating spicy and irritating food after vaccination can promote blood circulation, dilate capillaries and increase the permeability of blood vessels, which may lead to local redness, swelling, hard nodes and pain at the injection site. For people who have their own post-vaccination adverse reactions, the symptoms may also be aggravated. Spicy food can also stimulate the gastrointestinal mucosa, and excessive consumption can cause abdominal pain, diarrhea, acid reflux and other unpleasant symptoms. Eating spicy food 3 days after vaccination can reduce the chance of adverse reactions such as allergy and gastrointestinal discomfort, so as not to affect the normal life and work of the vaccinated person. In addition, after vaccination, you should avoid allergy-prone foods such as seafood and tropical fruits, as well as stimulating beverages such as strong tea, coffee and wine, and your diet should be light, with attention to balanced nutrition. The intake of water and fresh fruits and vegetables should be increased to replenish various elements needed by the body, which will help the vaccine to exert its immune effect in the organism. It should be noted that adverse reactions after vaccination are usually mild and last for less than 3 days. If there is intolerable discomfort, such as headache, fever, weakness, etc., or if it lasts for more than 3 days, it is recommended to seek medical treatment promptly.