Objective:To investigate the correlation between adverse events and antiplatelet drug resistance after neurovascular intervention for cerebrovascular stenosis.Methods:A total of 148 patients with cerebrovascular stenosis who underwent neurovascular intervention at Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine from January 2020 to December 2020 were included in this study. The platelet function of patients before and 24 hours after antiplatelet drug treatment was recorded. Platelet drug resistance was analyzed. At 3, 6 months, and 1 year after neurovascular intervention, adverse events were recorded through follow-up. The patients were divided into the occurrence group and the non-occurrence group according to whether adverse events occurred or not using the case-control study method. The Spearman correlation coefficient was used to analyze the correlation between adverse events and antiplatelet drug resistance after neurovascular intervention for cerebrovascular stenosis.Results:After 1 year of follow-up, among the 148 patients, 29 patients lost their follow-up, and 119 were included in the final analysis. Of the 119 patients, 41 patients had adverse events and 78 patients had no adverse events. In the occurrence group, the expression levels of platelet membrane glycoprotein P-selectin and platelet activating complex were (20.22 ± 6.33)% and (68.80 ± 11.52)%, respectively, before drug treatment, and they were (15.77 ± 4.12)% and (43.19 ± 5.90%)%, respectively, after drug treatment, all of which were significantly higher than those in the non-occurrence group [before drug treatment: (16.85 ± 3.24)%, (62.34 ± 10.77)%, after drug treatment: (8.31 ± 2.97)%, (35.85 ± 5.14)%] (before drug treatment: t = 3.20, 2.97, both P < 0.05; after drug treatment: t = 10.28, 6.74, both P < 0.05). The incidences of aspirin resistance and clopidogrel resistance in the occurrence group were 51.2% (21/41) and 43.9% (20/41), respectively, which were significantly higher than 26.9% (8/78) and 19.2% (9/78) in the non-occurrence group ( χ2 = 24.47, 20.23, both P < 0.001). Spearman correlation analysis showed that both aspirin resistance and clopidogrel resistance were moderately positively correlated with adverse events after neurovascular intervention ( r = 0.45, 0.41, both P < 0.05). Conclusion:Adverse events after neurovascular intervention are moderately positively correlated with resistance to the antiplatelet drugs aspirin and clopidogrel.