Disclosed herein is a pharmaceutical composition for preventing, alleviating or treating neurodegenerative diseases. The pharmaceutical composition contains, as active ingredients, Curcumae longae rhizome, Gastrodiae rhizoma, Polygalae radix, Salviae radix, Chaenomeles fructus, Paeoniae radix, Glycyrrhizae radix, Atractylodis rhizome, and Pulvis aconiti tuberis purificatum. The pharmaceutical composition is prepared by a method including the steps of: mixing Curcumae longae rhizome, Gastrodiae rhizoma, Polygalae radix, Salviae radix, Chaenomeles fructus, Paeoniae radix, Glycyrrhizae radix, Atractylodis rhizome, and Pulvis aconiti tuberis purificatum to obtain a mixture, and extracting the mixture to obtain a mixture extract; filtering the mixture extract; concentrating the mixture extract; and drying the mixture extract.