Post-appendectomy inflammation can be caused by the disease itself, improper surgical treatment, wound infection and other reasons. 1. The disease itself: appendicitis is a kind of infectious inflammation, natural appendectomy is an infectious surgery, after surgery may be re-infected abdominal cavity and peritonitis occurs. 2. Improper surgical treatment: the surgical treatment is not in place, the postoperative residual appendix is too long, the residual tissue can be inflamed again and inflammation occurs. Clinically, it is called appendiceal stumpitis. 3. Wound infection: lack of attention to wound care after surgery leads to bacterial invasion, causing inflammation. In the case of infection at the incision, there may be some redness, swelling, heat and pain, and there may be some pus coming out at this time. Therefore, postoperative appendicitis routinely requires intravenous antibiotic treatment for several days to combat infection. Commonly used drugs are ceftriaxone sodium, levofloxacin and so on. There are other reasons why appendix becomes inflamed again after surgery, so it is recommended to go to the hospital in time and be treated under the guidance of the doctor.