Although radical hysterectomy is the standard surgical treatment for patients with stage IB and II cervical cancer, it does not improve the prognosis of high-risk patients even if postoperative radiotherapy is added. There is therefore a need to establish some other therapeutic regimen. In the present retrospective study, the efficacy of concurrent nedaplatin after radical hysterectomy in high-risk stage IB to II cervical cancer was analyzed. From 1995 through 2005, patients with an International Federation of Gynecology and Obstetrics stage of IB2 and II cervical cancer who were given only radiotherapy (RT; n = 17) or postoperative concurrent chemoradiotherapy with biweekly nedaplatin at 70 mg/m2 (p-CCRT; n = 13) were entered. All of the patients had at least one of the following risk factors: lymphovascular space infiltration, positive lymph nodes, or parametrial invasion. There was no significant difference between the RT and p-CCRT groups with regard to mean age and risk factors, except that more patients in the p-CCRT group had positive lymph nodes (P < 0.05). Five-year progression-free survival and overall survival after RT versus p-CCRT were 76.0% versus 83.3%, and 81.9% versus 83.3%, respectively. Although many patients in the p-CCRT group had positive lymph nodes, there was no significant difference in either PFS or OS. No grade 4 myelosuppression or other severe side effects were seen in the p-CCRT group. As CCRT with nedaplatin might have some benefit, a randomized control trial should be conducted in the future.