Fat liquefaction in abdominal incisions is treated differently depending on the healing of the incision and the amount of exudate. If the exudate is relatively small and the incision is only partially healed, then 1-2 sutures can be cut off and gauze drainage strips soaked in saline can be placed inside the incision, so that the fat liquefaction from the incision can be smoothly drained out through diligent medication changes, which is beneficial to the healing of the incision. If there is more exudate and the incision does not heal, the incision should be opened in time to fully drain, and wet dressing with gentamicin and saline gauze should be applied, and after the granulation tissue is fresh, the second stage suture should be done in time to shorten the healing time. In the process, you can use metronidazole injection for flushing, and after flushing, use rehabilitation new gauze drainage strips for drainage, and then cover with sterile gauze, just fix with adhesive tape, and change the medicine once a day. Depending on the situation, it can also be changed many times until the incision is full of granulation tissue and then sutured. If you have systemic symptoms, you should be treated with oral or intravenous antibiotics.