PURPOSE: Salted mackerel and a producing method thereof using unripe tangerines are provided to add flavor and the taste of the tangerines and removing the fishy smell from the mackerel. CONSTITUTION: A producing method for salted mackerel using unripe tangerines comprises the following steps: preparing undiluted tangerine juice containing 2-2.7g of saccharide per 100g of tangerine juice; preparing the salted mackerel; dipping the salted mackerel into the undiluted tangerine juice; and rapidly freezing the aged and salted mackerel to -25~-28°;C. The dipped and salted mackerel may also be aged for 30-40 minutes prioer to rapid freezing. The salted mackerel which has been dipped into the undiluted tangerine juice contains 0.1-0.5g of saccharide per 100g of mackerel.본 발명은 감귤 미숙과를 이용한 자반고등어 및 그 제조방법에 관한 것으로서, 보다 상세하게는 감귤과즙을 고등어에 함유시켜 감귤의 향긋한 맛과 향이 가미되어 고등어의 비린내를 없앨 뿐만 아니라 고등어의 속과 겉이 잘 익을 수 있도록 하며, 폐기처분되는 감귤 미숙과를 이용한 자반고등어를 제공한다.