You should pay attention to a light diet before and after vaccination, and you should not eat within half an hour before and after taking live attenuated polio vaccine orally; for other vaccines, such as the new crown vaccine, influenza vaccine, rabies vaccine, etc., you should avoid spicy and stimulating or cold food before and after vaccination, and do not eat food that you are usually allergic to before and after vaccination.1. The food should be cooked with water, steamed, etc. to preserve the nutritional value of the food as much as possible. You can eat some coarse grains, such as oats, corn, sweet potatoes, etc. The main food can be rice, thin rice, noodles. In addition, you can also properly eat more vegetables and fruits rich in vitamin C, such as oranges, grapes, kiwi, tomatoes, carrots, spinach, etc., to maintain a balanced nutrition; 2. Avoid food: Patients should not ingest greasy staples such as doughnuts and crisps for the time being. Stimulating foods such as onion, ginger, garlic, chili, mustard, alcohol and other irritating foods are not conducive to wound healing because they have an irritating effect on the wound and can cause redness, swelling and itching; spontaneous foods such as mutton, milk, eggs, seafood, etc., which are animal proteins and have a higher chance of causing allergy, avoid entering the body at the same time with the heterogeneous protein of the vaccine and increase the chance of allergic reaction. In addition, pay attention to avoid strong tea and coffee, which affect sleep and cannot guarantee rest. Before and after vaccination, besides paying attention to diet, you should also pay attention to the local cleanliness and hygiene of the vaccination site, and do not take a bath for 24 hours after vaccination to avoid infection caused by contact with water.