Objective To investigate the risk factors for preoperative rerupture of cerebral ruptured aneurysms.Methods Clinical data were collected from the patients with ruptured cerebral aneurysms who were admitted to Xiangya Hospital of Central South University from January 2018 to December 2021， and the multivariate logistic regression method was used for statistical analysis.Results A total of 526 patients with ruptured cerebral aneurysms were enrolled， among whom there were 192 male patients and 334 female patients. Of all patients， 43 （8.17%） experienced rerupture of cerebral ruptured aneurysms before surgery， and the multivariate logistic regression analysis showed that ruptured cerebral aneurysms with sub-aneurysms， systolic pressure ≥160 mmHg after admission， and a time of >6 hours from onset to admission were risk factors for rerupture of cerebral ruptured aneurysms before surgery.Conclusions Patients with ruptured cerebral aneurysms should be admitted as soon as possible， and patients with sub-aneurysms or poor blood pressure control before surgery should receive treatment as soon as possible to reduce the risk of preoperative rerupture of ruptured cerebral aneurysms. ［Journal of International Neurology and Neurosurgery, 2024, 51(4): 36-40］