When receiving the vaccine, patients are advised to abstain from eating spicy foods for 1 week because spicy foods may cause increased redness and pain at the injection site, as well as increased gastrointestinal adverse reactions. After the vaccination, some patients may experience slight discomfort due to individual differences, mainly in the form of slight pain and redness at the injection site, and eating spicy food at this time may lead to increased pain and redness at the injection site and delay healing. In addition, some patients may have nausea and diarrhea after vaccination, and eating spicy food may cause irritation to the gastrointestinal tract, thus aggravating the discomfort reaction of the gastrointestinal tract. Therefore, within 1 week after the vaccination, patients are advised to avoid eating spicy foods and to eat a light diet with more fresh vegetables and fruits. If you inadvertently eat spicy food, just drink more water and pay attention to observation. If there is no redness, swelling or painful manifestation at the injection site, and no symptoms of diarrhea or nausea, there is no need to worry.