PURPOSE: A processing method of functional chicken is provided to uniformly insert and disperse functional additive liquid including medical herbs in the chicken. CONSTITUTION: Chicken is washed, and aged in curing liquid containing flavors for 3-5 hours (S1,S2). 7 kg of water, and 500 g each of red ginseng, jujube, ginger, acanthopanax, Angelica gigas, Eucommia ulmoides, and deer antlers are mixed to obtain a medical herb mixture. The medical herb mixture is boiled until the total weight is reduced to 5 kg, and the boiled concentrate is filtered to obtain 3 kg of well-being medical herb additive liquid. 10-20 g medical herb liquid is injected into 100 g of chicken using an injection needle in an air compression pressure greater than 6-10 kg/cm^2 (S3). The chicken injected with the medical herb liquid is refrigerated and aged (S4). The refrigerated and aged chicken is molded, and the molded chicken is tumbled in a vacuum condition (S5,S6). [Reference numerals] (AA) Start; (BB) End; (S1) Washing chicken; (S2) Aging the chicken in curing liquid; (S3) Injecting additive liquid on the surface of the chicken by using an injection needle; (S4) Refrigerating and aging the chicken injected with the additive liquid; (S5) Molding; (S6) Tumbling the molded chicken in a vacuum condition본 발명은 기능성 닭고기 가공방법에 관한 것이다. 본 발명은, 닭고기를 세척한 뒤, 상기 닭고기를 염지액에 숙성시키는 제 1 단계; 기능성 첨가액을 상기 닭고기의 표피에 주입니들을 삽입시켜 주입시키는 제 2 단계; 상기 첨가액이 삽입된 닭고기를 냉장 숙성시키는 제 3 단계; 상기 냉장 숙성된 닭고기를 성형하는 제 4 단계; 및 상기 성형된 닭고기를 진공상태로 텀블링 처리하는 제 5 단계; 를 포함하는 것을 특징으로 한다.