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Objective To investigate the effective management approaches for mental retardation plus epilepsy in children.Method Sodium valproat[15～ 60 mg/（ kg· day)] or nitrazepam[0.5～ 1 mg/（ kg· day） ] and guanmaishu containing hyoscyamine(0.0045～ 0.045 mg/（ kg· day)] as adjuvant were administered for 1.5～2 consecutive years.EEG,three dimensional Doppler ultrasonic examination of cerebral vessels were performed.Result Favorable therapeutic effect was obtained in 25 cases(48.1％ ),good effect in 12 cases(23.1％ ).Conclusion Favorable therapeutic effect of hyoscyamine in epilepsy is correlated with improved cerebral microcirculation,cortical choline receptor blocking ,reduced conduction between synapses.These factors all inhibit onset of epilepsy.