OBJECTIVE To investigate the clinical effect of huperzine A microemulsion cataplasm(Hup-A MEC) to Alzheimer patients by governor vessel(GV) acu-points. METHODS Seventy patients with Alzheimer disease were randomly divided into 5 treatment groups, positive group and blank group. The patients in each group were stopped taking all drugs improving brain function druring treatment period and 2 weeks before. After 2 weeks Hup-A MEC were sticked to 4 GV acu-points and chest, blank cataplasm was sticked to chest. T...