Redness and swelling after vaccination, if it is a normal reaction, temporary observation can be, if it is infected inflammation or allergic reaction, need to deal with the causative factors, if necessary, should be treated with drugs. 1. Normal reaction: under normal circumstances after vaccination, there may be local redness, hardness and other symptoms, is a normal performance, generally no special treatment, temporary observation can be, about three days can subside. 2. Infection and inflammation: If the inflammatory reaction is caused by vaccination, inflammatory edema can be formed, erythromycin ointment, mupirocin ointment can be applied externally, if the inflammatory reaction is more serious, oral antibiotics can be taken as prescribed by the doctor, such as cephalexin, benzylpenicillin and so on. 3. Anaphylactic reaction: After vaccination, if you are allergic to the medicine, it is easy to produce an anaphylactic reaction, resulting in redness, swelling and pain, and there will be itchy symptoms, you should follow the doctor’s instructions to take antihistamines, such as cetirizine, loratadine and so on. After vaccination will be recommended to first observe half an hour, until the body has no adverse reactions and then discharged from the hospital, if there are uncomfortable symptoms after leaving the hospital, persistent unrelieved or significantly aggravated, you should promptly consult a doctor, comply with the doctor’s instructions to standardize the treatment.