If you accidentally take a shower after vaccination, you should dry your body immediately after the shower to avoid the moisture remaining in the injection site to increase the risk of infection, and also pay attention to keep warm to avoid catching a cold. At the same time, you should pay attention to observe the changes in the body, if there is any discomfort, consult a doctor in time.1, no special symptoms: If the patient’s skin does not change locally after bathing, and there is no discomfort, there is no need for special treatment. Just pay attention to light diet and keep the injection site dry. 2. Skin symptoms: If the injection site appears red, swollen, itchy or even painful, you need to consider the possibility of infection. Need to use iodine, alcohol and other disinfection treatment, such as no systemic symptoms can be observed at home; 3, systemic symptoms: due to the part of the vaccine will have an adverse reaction incubation period, may be the child after vaccination adverse reactions, just after the bath, such as fever, vomiting, diarrhea and other systemic symptoms. It is recommended to go to the hospital in time for symptomatic treatment, such as fever can be physically cooled down, serious cases can be given acetaminophen and other drugs.