Objective:To explore the clinical effect of rigid neuroendoscopy and traditional drilling irrigation and drainage in the treatment of chronic subdural hematoma(CSDH).Methods:The clinical data of CSDH patients were retrospectively analyzed.Accord-ing to different treatment methods,they were divided into traditional group(treated with traditional drilling irrigation and drainage)and endoscopic group(treated with rigid neuroendoscopy),48 cases in each group.The differences in perioperative indicators,GCS score,Markwalder grading and NIHSS score were compared between groups,and the complications and recurrence rate in the two groups were counted.Results:The intraoperative blood loss,hospitalization time and immediate postoperative hematoma clearance rate in endoscopic group were better than those in traditional group(P＜0.05),and the total surgical time in traditional group was shorter than that in en-doscopic group(P＜0.05).At 7 days after surgery,the GCS score and Markwalder neurological function grading in the two groups were improved(P＜0.05),but there were no obvious differences between the two groups(P>0.05).Different time points after surgery,the NIHSS score in both groups was reduced compared to before surgery(P＜0.05),and the score was lower in endoscopic group than that in traditional group(P＜0.05).The complications showed no significant differences(P>0.05),and the recurrence rate of hematoma was lower than that in traditional group(P＜0.05).Conclusion:Both rigid neuroendoscopy and traditional drilling irrigation and drainage can effectively treat CSDH,but neuroendoscopy has higher hematoma clearance rate,shorter hospitalization time and lower postoperative recurrence rate,which is worthy of clinical promotion.