Abstract:Objective:To observe the anti dementia effect of Bushenjiannao 1 decoction on mice.Method:The learning and memory tests were realized with a water maze on the learning and memory impact of mice induced by scopolamine and cycloheximide.The effect of Bushenjiannao l decoction on the independent activity and anti fatigue ability of mice were also investigated.Result:Bushenjiannao l decoction used at a medium dose of 15g crude drug/kg and a higher dose of 45g crude drug/kg could significantly improve the learning and memory abilities of mice injected with scopolamine.Higher doses could improve these abilities of mice injected with cycloheximide,and also improve the anti fatigue ability of mice.No significant differences were observed in the independent activity of mice between the groups.Conclusion:Bushenjiannao l decoction helps improve the learning and memory abilities and enhance the anti fatigue ability,but has no effect on excitability of the central nervous system.