Children with pneumonia vaccine arm swollen a small piece of fever, generally considered to be the vaccine caused by adverse reactions, it is recommended that through the towel hot compresses and physical cooling to deal with. 1. hot towel: some children after vaccination, the vaccination site is prone to redness, swelling, heat pain and nodules and other symptoms, at this time you can through the hot towel wet compresses to promote the local blood circulation to speed up, to help alleviate the symptoms of local redness and swelling, and suggest that parents need to observe the changes in the condition. 2. Physical cooling: For the fever symptoms caused by vaccination, can be relieved by physical cooling therapy, need to drink more warm water, accelerate the excretion of urine, you can also use warm water to wipe the body and soak in a warm bath and other ways to dissipate heat. If your child has a persistent fever that does not go away, you can give your child fever-reducing medications, such as ibuprofen or acetaminophen, under your doctor’s supervision. In addition, there are certain contraindications to pneumonia vaccination. To avoid affecting your child’s health, parents are advised to consult a specialist before vaccinating your child. If the above treatment is not effective, it is recommended to go to the hospital.