PURPOSE: A producing method of a functional aged garlic concentrate is provided to enable a user to easily eat garlic by using an aged garlic extract, a Japanese apricot extract, and an agaricus blazei mycelium extract. CONSTITUTION: A producing method of a functional aged garlic concentrate comprises the following steps: ferment-aging garlic into aged black garlic; extracting the aged garlic with a solvent for 1~48hours at room temperature, and condensing at 30~100deg C to obtain an aged garlic extract; mixing Japanese apricot with sugar before fermenting for 1~6months at 10~100deg C, and obtaining a Japanese apricot extract by filtering the mixture; extracting an agaricus blazei mycelium with the solvent for 1~48hours at room temperature, and filtering to obtain an agaricus blazei mycelium extract; and mixing the aged garlic extract, the Japanese apricot extract, and the agaricus blazei mycelium extract before sterilizing, dispensing, and sealing.본 발명은 기능성 흑마늘 농축액을 제조하기 위한 제조방법에 관한 것으로, 본 발명의 흑마늘 농축액은 흑마늘 엑기스를 주성분으로 매실 엑기스 및 아가리쿠스버섯 균사체 엑기스를 이용하여 제조함으로써 고영양, 풍미성 및 기호성이 우수할 뿐만 아니라, 암세포의 증식을 억제하는 탁월한 항암효과를 나타내므로 우수한 품질의 기능성 흑마늘 농축액을 제조할 수 있다.