Most of the lumps after vaccination can subside on their own if they are not accompanied by other symptoms, but if they are accompanied by systemic symptoms such as hot pain, pus and even high fever, they need to consult a doctor in time for anti-infection treatment. If there is only a lump at the injection site after vaccination, it is considered to be a normal phenomenon due to common adverse reactions to vaccination; it can subside in 2~3 days, and a cold compress can be applied within 24 hours, and a hot compress can be applied after 24 hours to promote swelling. If accompanied by redness, heat, pain, pus, high fever and other symptoms, consider secondary infection, need to consult a doctor in a timely manner under the guidance of a professional doctor anti-infection treatment (such as amoxicillin, penicillin). Therefore, according to the injection site lump manifestation is different, the treatment is also different. Usually simple enlargement does not need to be treated, if accompanied by pus, heat and pain, etc., need to be treated under the guidance of a professional doctor.