Dried Porphyra haitanensis is a kind of food with seaweed as the main raw material. After drying and processing, Porphyra haitanensis becomes dry, brittle and hard, and has a special taste and taste, which is dry Porphyra haitanensis. In Asian countries, such as China, Japan and South Korea, dried Porphyra haitanensis is widely used to make sushi rolls, seaweed and rice. It is not only rich in nutrients, protein, fiber and vitamins and minerals, but also has the characteristics of low calorie and high fiber, which plays an important role in a healthy diet.