Pus inside the wound after healing, you need to open the original incision, clean the wound to drain out the pus, and leave drainage, change the medicine regularly until the infection is cured, and need to combine with antibiotics if necessary. Pus inside the healed wound is most likely due to incomplete disinfection during suturing or dressing change, resulting in wound infection and pus, which requires timely medical treatment to avoid further aggravation of the infection. The first and foremost treatment for septic wounds is to make an incision and drain the septic area in order to drain the pus out of the wound in time and prevent the infection from spreading further into the depths. After the incision and drainage, the wound should be changed regularly to ensure smooth drainage and promote wound healing. For severely infected wounds, antibiotics such as amoxicillin and cefaclor should be taken under the guidance of the doctor to actively control the infection. After the wound healing internal pus, do not handle, need to seek medical treatment.