If you plan to give your baby the polio vaccine, you should pay attention to your baby’s health condition in advance and take his or her temperature to make sure there is no fever or hypothermia. If your baby is suffering from gastroenteritis or other illnesses, do not give the polio vaccine, and only give the vaccine when your baby is fully recovered to avoid affecting the immunization effect. Because polio vaccine is a biochemical agent, it can cause fever and local injection site redness, swelling and pain when injected into the body, so it should not be injected during certain infectious diseases. After the injection, it is also important to closely observe the changes in the body by measuring the body temperature and observing the changes in the wound. If the wound is red, swollen, or painful, apply a hot towel to promote the dissipation of local bruising, which will help to quickly relieve the pain in the arm.