Sebaceous cysts broken by themselves have been flowing pus indicates that there is a bacterial infection, can be treated by drug therapy such as cephalosporin and surgical treatment method. 1. medication: sebaceous cyst infection for epidermal infection, patients can take oral antibiotic medication, generally a generation, the second generation of cephalosporin can be very good efficacy, can cover the bacterial spectrum. It is important to note that there may be nausea and vomiting and other gastrointestinal side effects, cephalosporin allergy patients are prohibited. 2. Surgery: sebaceous cyst patients will have localized redness, swelling, heat and pain, if the abscess is more, can not be well drained, you need to go to the hospital to do a small incision and drainage surgery, the abscess of pus and fluid fully drained to the outside of the body, can make the patient’s infection control speed up. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment. If you need to use drugs, pay attention to use under the guidance of the doctor, avoid unauthorized use of drugs.