The pus under the scar can be improved by medication and surgery to promote the disappearance of the pus, the treatment needs to be carried out under the guidance of the doctor. 1. medication: pus under the scar considering the existence of infection, you can take antibiotics such as levofloxacin, roxithromycin, azithromycin and other drugs to control inflammation, the drug is recommended to follow the doctor’s instructions to use, the appearance of rashes, diarrhea and other adverse reactions to the timely medical attention, drug allergy is prohibited to use. 2. Surgical treatment: pus under the scar proves the existence of soft tissue infection, usually can not be discharged on its own, if the local has formed a more definitive abscess, it is recommended to incise and drain through surgery, smooth drainage, regular medication, anti-infection, and promote the healing of the wound. So when there is pus under the scar, it is recommended to go to the regular hospital in time to receive standardized treatment, so as not to delay the condition and cause adverse consequences.