Localized bulging after hernia surgery needs to consider the possibility of subcutaneous hematoma, local edema, hernia recurrence, wound infection, etc. The specifics need to be examined to clarify. 1. Subcutaneous hematoma: In the early postoperative period, subcutaneous bleeding and blood stasis in the subcutaneous tissue of the wound will lead to localized bulging, and the patient may be accompanied by pain and skin bruising. 2. Local edema: early postoperative, due to surgical trauma, local tissue edema will also have the symptom of bulging, usually after the edema subsides, it will disappear. 3. Hernia recurrence: A small number of patients may have a recurrence of hernia after surgery, which will also lead to localized bulging symptoms. 4. Wound infection: postoperative wound infection, pus accumulation in the subcutaneous tissue will also have bulging symptoms, most patients with redness and swelling around the wound, pain and even fever. Overall, localized bulging after hernia surgery should be taken seriously, and go to the hospital in time for examination and treatment.