If the injection bag is a normal manifestation, generally no special treatment; if the injection is infected with inflammation or allergic reaction caused by, need to take general treatment for the cause of the disease, medication to alleviate the symptoms. 1. Normal performance: often associated with the type of drug, such as penicillin injection easy to appear skin bag, is a normal reaction, without special treatment. If it does not go away, you can use local massage, hot compresses and other ways to relieve the symptoms. 2. Inflammatory infections: If it is due to the inflammation caused by inflammation in the injection, you can choose to use iodophor, alcohol disinfection, and then topical erythromycin ointment, mupirocin ointment. If the symptoms are serious, then consider oral amoxicillin, cefaclor anti-inflammatory. 3. Anaphylactic reaction: allergic reaction to medicines, causing anaphylactic edema will cause skin bags. If there is no rash, laryngeal edema and other serious allergic reactions, Jian can first apply glycerite lotion to stop itching, and then oral loratadine anti-allergy. If necessary, you need to go to the hospital. The injection bag needs to be observed for a period of time, if the bag is relatively large, and does not disappear for a long time, you should consult a doctor in a timely manner, and under the guidance of a professional physician to deal with.