As a potent acetylcholinesterase inhibitor with high selectivity, huperzine-A has the function of ameliorating senile memory impairment and obviously improving memory, cognition, and behavior function in patients with Alzheimer's disease (AD), and is considered as a promising drug for the treatment of senile dementia and AD. It has been proved that huperzine-A may have neuroprotective effect and prevention effect against injury caused by chemical weapons, and thus may be utilized as one of the most perfect anti-aging drugs packing as arrangement