Swelling of the hand from the vaccination is usually due to the swelling and pain of the soft tissues of the skin around the puncture injury, or it may be a local inflammatory edema due to the stimulation of drugs. However, no matter which of the above reasons, the swelling can be reduced by means of local hot compresses, commonly used are hot towels, warm water bags, salt bags, serving 20-30 minutes each time, and can be applied twice a day, thus promoting local blood circulation, accelerating the dissipation of local bruising and swelling, and the absorption of inflammation. But before the hot compress must wait for the local swelling to be completely stable and still, otherwise it will be more and more swollen. In addition, you can also do some local physical therapy, such as infrared therapy, microwave therapy or ultra-short wave therapy can achieve the above role of hot compresses, and the effect will be better.