Objective：To evaluate the risk factors and prognostic impact of traumatic brain injury（TBI）combined with traumatic cervical spinal cord injury（TCSCI）in patients with multiple traumas based on emergency CT. Methods：A retrospective analysis was conducted on the data of 218 patients with multiple traumas who were admitted to the emergency department of the First Affiliated Hospital of Nanjing Medical University from January 2020 to December 2022，in whom TCSCI was not excluded. Patients were divided into the TCSCI group and non-TCSCI group based on cervical MRI results. Multivariate logistic regression analysis was used to screen for independent risk factors，construct a receiver operating characteristic（ROC）curve prediction model，and perform internal validation. Results：TCSCI was identified in 69 patitents（31.7%）. Multivariate logistic regression analysis showed that higher head abbreviated injury scale（hAIS）scores（OR=1.552，95%CI：1.101-2.188），sub-axial injury classification（SLIC）scores（OR=1.235，95% CI：1.006-1.517），and paraplegia symptoms（OR=3.810，95%CI：1.115-13.020）were independent risk factors for TCSCI. The ROC curve for the predictive model showed an area under the curve（AUC）of 0.900（95%CI：0.859-0.941）. The Hosmer -Lemeshow test confirmed good discriminative ability and calibration of the model. Conclusion：hAIS，SLIC scores，and paraplegia symptoms are independent risk factors for TCSCI in patients with multiple traumas. Emergency CT combined with assessment of hAIS，SLIC scores， and paraplegia may effectively identify high-risk TCSCI patients with multiple traumas where TCSCI cannot be excluded.