BCG pus after bathing broken general disinfection and cleaning of the wound can be, if symptoms of infection occurs, should be timely anti-infective treatment, symptomatic treatment and so on. BCG is a live attenuated vaccine against Mycobacterium tuberculosis, most children with BCG injection will appear pus, usually pus discharge will soon heal, leaving a scar. 1. Disinfect and clean the wound: if it is broken during the suppuration period, the wound can be disinfected with povidone-iodine 2-3 times a day, and the wound will usually scab and heal in a few days. Before the wound heals, avoid getting wet and keep the wound clean to prevent the infection from worsening. 2. Anti-infection treatment: if the child has fever, depression and other systemic symptoms of infection before wound healing, the more serious can be given penicillin, cephalosporin and other antibiotics for anti-infection treatment. 3. Symptomatic treatment: children with fever can drink more warm water, oral acetaminophen and other antipyretic treatments if the body temperature is higher than 38.5 ℃. If the child’s wound is serious, not healed for a long time, high fever or recurrent fever, should go to the regular hospital in time, early treatment.