Through the analysis of a large amount of clinical data of appendectomy and comparing of 200cases with emergency appendicitis we found some effective measurements of preventing the cut infections after appendectomy. It is very important to complete the folowing procedures: the early diagnosis to the emergent appendicitis patients, performing the surgery immediately, completely preparation before the surgery, choosing correct anesthesia, choosing the reasonable cuts, strictly asepsis performance, correct usage of antibiotics before and after the surgery, and the correct utility of drainage tubes.