You can eat with the hepatitis B vaccination, but pay attention to a light diet, no alcohol, no spicy and other stimulating foods, and no allergy-prone foods such as seafood, to avoid allergies and aggravating post-vaccine adverse reactions. Before vaccination, vaccination should be suspended if you have a cold or fever, suffer from acute diseases and acute attacks of chronic diseases. Pay attention to rest after vaccination. If fever, nausea, vomiting, malaise, redness, swelling, hard nodes, pain and other symptoms occur at the vaccination site, they can be relieved by themselves in 1-2 days, and fever-reducing drugs can be used symptomatically, etc. If the adverse reaction is more serious, seek medical help.