Abstract:The Ding Zhi Pills described in"Thousand-Golden-Prescriptions" have better memory improving ef-fect than those described in"Prescriptions People‘s Welfare Pharmacy". A combination of Poria, Radix Polygalae andRhizoma Acori Graminei could enhance the pharmacologic effect of Radix Ginseng. Cinnabaris, described in "Pre-scriptions People‘s welfare Pharmacy" ,as one of the compositions in Ding Zhi Pills, does not improve the impairmentof learning and memory, and therefore seems to have no meaning in the Ding Zhi Pills.