Accurate staging as well as diagnosis of cervix carcinoma is of paramount importance in planning treatment. Cervical smear cytologic studies have increased the detection rate of cervix carcinoma, but current radiologictechniques are limited in staging cervix carcinoma and precise visualization of lymphnodal metastasis. The CT scancan display the precise transaxial anatomical structures, permitting us not only to know the tumor size, shape andits extent but also lymphnodal enlargement in the pelvic cavity and around the abdominal aorta and secondarychanges of the kidney. The authors have tested the usefulness of CT in staging cervix carcinoma and detectinglymphatic involvement by analysis of 24 cases diagnosed by CT and confirmed histologically at St. Mary's hospitalduring the period from Oct. 1982 to May 1984. The conclusions are as follows; 1. The accuracy of CT instaging ofcervix carcinoma was 79%. 2. The accuracy of CT diagnosis of lymphatic involvement was 87.5%, sesitivity was85.7%, and speicificity was 88.2%.