Abstract: Objective To investigate the prognostic value of prognostic nutritional index (PNI) and modified Glasgow prognostic score (mGPS) in patients with cervical cancer. Methods A total of 120 patients with cervical cancer were selected as the study subjects. Patients' data were collected and analyzed, with follow-up conducted until June 30, 2023. Kaplan-Meier method was used to plot survival curves. Log-rank test and Cox regression analysis were employed to identify prognostic factors. Results The median follow-up time for patients in this study was 61 months, with a median survival time of 52 months. During the follow-up period, 41 patients (34.17%) died. The 3-year and 5-year survival rates were 82.50% and 66.67%, respectively. Receiver operating characteristic (ROC) curves showed that the areas under the curve (AUC) for PNI, mGPS, albumin (ALB), lymphocytes (LYM), C-reactive protein (CRP), and neutrophils (NEU) in predicting patient prognosis were 0.90, 0.81, 0.84, 0.86, 0.82, and 0.71, respectively. The optimal cutoff values were determined to be 41.80 for PNI, 0.50 points for mGPS, 34.25 g/L for ALB, 1.44×10⁹/L for LYM, 5.45×10⁹/L for CRP and 7.25 mg/L for NEU. Cox regression analysis indicated that PNI (HR=4.18, 95%CI=2.83 to 9.21, P=0.015), mGPS HR=1.95, 95%CI=1.37 to 3.59, P<0.001 (mGPS=1 point); HR=3.07, 95%CI=2.38 to 5.36, P<0.001(mGPS=2 points) and International Federation of Gynecology and Obstetrics (FIGO) staging HR=2.03, 95%CI=1.34 to 3.85, P=0.030(FIGO stage=stage Ⅲ); HR=3.46, 95%CI=2.15 to 6.62, P=0.003 (FIGO stage=stage Ⅳ) were significant risk factors affecting the prognosis of cervical cancer patients. Conclusion PNI, mGPS and FIGO staging are important predictors of prognosis in cervical cancer patients. Attention to PNI and mGPS before treatment may help improve clinical outcomes.