When newborns are vaccinated with BCG for one month, they may develop pus. The child will have redness, swelling and pus on the inoculated skin, and later will gradually crust over, thus forming a BCG scar, which are all normal vaccination reactions. If the child is in good spirits and does not have a persistent high fever or cough, parents do not need special treatment, but only need to give the child more warm water or apply some local antibiotic ointment to the child. If the child has severe BCG sepsis and has systemic symptoms, such as high fever and poor milk intake, topical rifampicin is needed. In this case, topical rifampicin powder should be applied to the child’s local area, which can effectively treat the child’s severe septicemia. If it does not get better, it is recommended to go to a specialist hospital in time.