The present invention provides a Ganoderma solid medium containing wheat germ. After fermented by Ganoderma, the Ganoderma solid medium turns into substance with high concentration of gamma-aminobutyric acid. Thus, this Ganoderma solid medium could be used to prepare health foods.本發明提供一種添加小麥胚芽的靈芝固態培養基。所述靈芝固態培養基經靈芝發酵後,靈芝培養基中產生高濃度之γ-胺基丁酸,可用以製備保健食品。