Objective To explore the related factors of recurrence of chronic subdual hematoma after neurosurgery.Methods? The clinical data，imaging features，surgical methods and postoperative treatment of 186 patients with chronic subdural hematoma admitted to Sihong County People's Hospital from March 2016 to December 2019 were retrospectively analyzed. Univariate analysis and multivariate logistic regression analysis were performed using SPSS 19.0 software. Results? 27 patients recurred after neurosurgery，and the rate of recurrence was 14.52%.Among them，57.14%（8/14） recurred in those with CT findings of hyperdensity，25.00%（17/68） recurred in those with midline shift greater than 10 mm，and 6.25%（5/80） recurred in those taking atorvastatin postoperatively.Multivariate logistic regression analyses revealed midline shift exceeding 10 mm（P=0.045）and high density hematoma（P=0.001）were independent factors for recurrence of CSDH. Conclusion? Midline displacement and high density hematoma on CT affect theprognosis of CSDH，and additional atorvastatin administration should be recommended after operation.