Objective:To compare the efficacy and adverse events of dual antiplatelet drugs in different durations and single antiplatelet drug for patients after cerebral artery stenting. Methods:The experiment is a investigative and retrospective study

and 380 patients were admitted. According to the durations of dual antiplatelet（aspirin and clopidogrel）after cerebral artery stenting

the patients were divided into three groups:group A（60 cases）for 1month

the group B（220 cases）for 3 months

group C（100 cases）for 4 to 12 months. According to the different single antiplatelet drugs after dual antiplatelet regimen

the patients of group A and group B were divided into two subgroups:AB1 group（132cases）for aspirin

AB2（91 cases）for clopidogrel. By chi-square test or Fisher’s exact test and multifactor Logistic regression analysis

the recurrence incidence of cerebral infarction

cerebral hemorrhage

extracranial blood

myocardial infarction

death within 1 year after cerebral artery stenting were compared. Results:There was no significant difference in the incidence of cerebral infarction recurrence（P=0.580）among group A

B

C;and no statistical difference（P=1.000）between group AB1 and AB2. There was no statistical differences in myocardial infarction

cerebral hemorrhage and extracranial blood

death among group A

B

C and between group AB1

AB2. Conclusion:Taking aspirin and clopidogrel together for 1month

3 months

and 4 to 12 months has the same effect

the same as taking aspirin or clopidogrel alone after dual antiplatelet.