Baby vaccination place is red and hard, may be a normal reaction, or vaccination after infection, allergies and other factors, can be taken according to the cause of the general treatment, medication to alleviate the symptoms. 1. Normal reaction: after vaccination, under normal circumstances, the local area may have redness, hardness and other symptoms, generally no special treatment, if it does not go away, it is recommended that appropriate ice. 2. Infection: If the local infection inflammation after vaccination, easy to cause inflammatory edema. Can be applied externally erythromycin ointment, mupirocin ointment normal, serious cases can be oral cephalosporin, benzylpenicillin and other drugs. 3. Allergy: after vaccination when the local anaphylactic reaction, will cause redness, swelling and pain, and accompanied by itching symptoms. Can oral dexamethasone anti-inflammatory, oral loratadine anti-allergy. After the baby vaccination, the local redness and hardness symptoms can first be dealt with in accordance with the above way, the effect is not good, should consult a doctor in a timely manner, and under the guidance of a professional physician targeted treatment.