After vaccination, if the needle mouth appears red and swollen, first of all, you can use skin disinfectant for local disinfection, you can use hydrogen peroxide or Neosporin for local flushing, you can also use iodophor for disinfection, alcohol deiodination, if there is no open wound, you can also use hot towels for external application, which is very helpful for eliminating redness and swelling. Secondly, during the treatment period, pay attention to observe the baby’s body temperature, if there is an increase in temperature, it is likely that the infection is aggravated, to promptly use oral anti-inflammatory drugs, for treatment, such as oral erythromycin granules, or cefadroxil granules. During the treatment period, pay attention to observe the changes in the wound, if it continues to worsen, to go to the hospital in time, intravenous drip anti-inflammatory drugs for treatment, or even need to cut open the drainage, internal flushing, in order to make the condition under control, pay attention to enhance the baby’s nutrition, conducive to the rapid improvement of the wound.