Spanking injections for babies generally do not cause certain harm to the body, but some adverse reactions may occur, such as bleeding at the injection site, local skin redness and swelling, nerve damage, etc., which are analyzed as follows: 1. Bleeding: when giving babies spanking injections, bleeding at the injection site may occur due to poor cooperation of babies. 2. Localized redness and swelling: the local pain of spanking injection will be more obvious, so some babies will have red and swollen skin after spanking injection, and it is easy to cause pain. 3. Nerve damage: Due to the baby’s uncooperative, the doctor may shift the situation when giving the baby a spanking injection, which may even cause the possibility of nerve damage. The baby can be pacified before the spanking injection, cooperate with the doctor’s operation, and inform the doctor in time to deal with any adverse reaction after the injection.