The utility model provides a capsule structure containing plant-based unsaturated fatty acid. The capsule structure comprises a capsule casing and a plant-based unsaturated fatty acid particle, wherein the capsule casing comprises a first half casing and a second half casing whose structures are complemented, and the first half casing and the second half casing can mutually embedded to form accommodating space; and the plant-based unsaturated fatty acid particle fills in the accommodating space of the capsule casing. Ingredients of the capsule structure containing the plant-based unsaturated fatty acid are edible for vegetarians, so that the problem that a traditional fish oil capsule contains non-vegetarian ingredients is solved, and another choice for taking in the unsaturated fatty acid is added for people who cannot accept the fishlike smell.本創作係提供一種含有植物性不飽和脂肪酸之膠囊結構,係包含一囊殼,包含結構互補可相互嵌合而形成一容置空間之一第一半殼與一第二半殼;以及一植物性不飽和脂肪酸顆粒,係填設於該囊殼之容置空間內。本創作之含有植物性不飽和脂肪酸之膠囊結構之成分皆為素食者可食,解決了傳統魚油膠囊為葷食成分的問題;亦對於無法接受魚腥味之人增加了另一個攝取不飽和脂肪酸脂肪酸之選擇。