Liquefaction of the incision is mostly seen in traumatic wounds or obese patients, as well as after major surgeries or longer surgical treatments, and contaminated surgeries, due to liquefaction of solid fat after infection, which will be manifested as redness, swelling, and pain in the wound, and may even be accompanied by fever. Laboratory tests will also reveal a marked increase in the proportion of leukocytes and neutrophils in the blood count, and sutures should be promptly removed, the wound should be thoroughly debrided and drained, and dressing changes should be performed intermittently after debridement. If the granulation tissue of the wound is fresh and there is fresh blood, the option of elective secondary suturing is also available. For abdominal wounds, if liquefaction occurs, you can choose to reduce the tension suture, and after the reduction of tension suture healing time is relatively long, the removal of stitches is also longer, usually about two weeks after the operation, and during the treatment period should pay attention to appropriate nutrition, monitor the changes of laboratory indicators.