The invention relates to a special shrimp flavor essence containing seaweed extract and a preparation method thereof. The shrimp flavor essence components include: seaweed extract, 1,2-propylene glycol, and shrimp flavor essence base material. Among them, the shrimp flavor base material is mainly composed of maltol, trimethylamine, phenethylamine, dimethyl sulfide, butyric acid, benzyl alcohol, octanoic acid, 1-pentene-3-alcohol, acetic acid, dimethyl disulfide Ether, 2,6-lutidine, ethyl maltol and other components. The flavor utilizes the original fishy aroma of seaweed extract, combining the green and salty aroma with the shrimp flavor base material, which makes the shrimp flavor essence have a clear fishy aroma, bursting head aroma, obvious and natural shrimp flavor in the body, and thick tail aroma , lasting fragrance. The essence uses the seaweed extract made from low-value seaweed to increase the fishy smell, fragrance and natural feeling of the essence. It is easy to use in fishing baits, achieves the effect of increasing fragrance and fishy smell, and can increase the temptation of fish bait to fish. Good reviews from lure customers.