Disclosed are a processing method for marine products and the processed marine products. The present invention is embodied by the following steps: preparing the washed marine products; dehydrating the marine products; inserting starch into the marine products; and freezing the marine products with starch. By the present invention, the economic feasibility in both time and costs in a cooking process of the marine products by users is capable of being secured after thawing the marine products. [Reference numerals] (AA) Start;(BB) End;(S100) Defrost seafood;(S110) Remove heads and internal organs of the seafood;(S120) Wash the seafood;(S130) Dehydrate the seafood;(S140) Adjust the percentage of water content;(S150) Insert seasoning;(S160) Insert starch;(S170) Quick freezing;(S180) Examine measuring and quality;(S190) Package and stock수산물 가공 방법 및 그에 의한 가공 수산물이 개시된다. 본 발명은, 세척된 수산물을 준비하고, 세척된 수산물을 탈수하며, 수산물에 전분을 투입하고, 전분이 투입된 수산물을 냉동시키는 과정을 통해 구현된다. 본 발명에 따르면, 수산물의 해동 이후에 소비자에 의한 조리 과정에서의 시간적, 비용적 경제성을 도모할 수 있게 된다.