Most people can eat popsicles after vaccination. There is no clear rule prohibiting the eating of popsicles after vaccination, and it generally does not affect the activity and effect of the vaccine, but it is not recommended to eat popsicles immediately or in large quantities right after vaccination. In addition, for people who have obvious discomfort after vaccination, such as fever, headache, nausea, vomiting, diarrhea and other symptoms, as well as those who have poor gastrointestinal function, it is not recommended to eat popsicles within a short period of time after vaccination. Although eating a moderate amount of popsicles after vaccination will not affect the effect of the vaccine, people with poor gastrointestinal function may experience gastrointestinal discomfort such as diarrhea and abdominal pain by eating popsicles, and the vaccine itself will stimulate the body’s immune system, so it may aggravate gastrointestinal discomfort. In addition, since adverse reactions after vaccination and eating popsicles can be manifested as gastrointestinal discomfort such as diarrhea, abdominal pain, nausea, vomiting and other systemic symptoms such as headache and fever, eating popsicles after vaccination may cover up the adverse reactions after vaccination, which is not conducive to the doctor’s judgment of the real cause and may delay the treatment. Within 1 week after the vaccination, it is recommended to eat a light diet with more fresh fruits and vegetables to ensure balanced nutrition, and not to drink alcohol or eat stimulating foods such as too spicy or cold. Also ensure sufficient rest, avoid staying up late and straining, and maintain a good lifestyle.