ObjectiveTo explore the related factors for postoperative fever in patients with ovarian mature teratoma. MethodsA case-control study was conducted, and the subjects were patients with ovarian mature teratoma who had undergone surgical treatment in the hospital where the author works during September 2010 to August 2013. Eighty-eight cases diagnosed as ovarian mature teratoma with postoperative fever were included in the case group and 100 cases diagnosed as ovarian mature teratoma without postoperative fever were included in the control group. The medical records of the two groups were analyzed retrospectively. ResultsHospital stay of the case group and the control group was (5.68±1.53) and (3.28±1.18) days, respectively. The laparotomy ratio was 38.64% (34/88) and 20.00% (20/100); the tumor diameter was (6.65±3.07) cm and (5.33±1.87) cm, respectively. The difference in the above indicators between the two groups was significant (P<0.05). There was no significant difference in age, body mass index, body temperature before surgery, preoperative CA199, preoperative tumor torsion, preoperative antibiotics, tumor characteristics (bone, multi-room, bilateral), operative time, blood loss, pelvic adhesions, placing drainage tubes between the two groups (P>0.05). ConclusionPostoperative fever of ovarian mature teratoma is related to surgical approach and tumor size. Hospital stay is associated with postoperative fever. We should strengthen the gynecological examination. Early detection and reasonable choice of surgical procedures can reduce the incidence of postoperative fever, thus shorten the hospital stay and save medical resources.