The invention provides nutritional coarse cereal egg rolls and a preparation method thereof. The method comprises the following steps of: (1) mixing 50 to 150 parts of corn meal, 250 to 350 parts of soybean meal, 250 to 350 parts of egg, 150 to 250 parts of edible oil and 5 to 10 parts of isochrysis galbana in part by mass to form egg roll materials; and (2) preparing the egg roll materials into the nutritional coarse cereal egg rolls. The nutritional coarse cereal egg rolls overcome the defect of single nutrition of the egg rolls produced by separately using low-gluten flour in the prior art, have the advantages of high dietary fiber, richness in polyunsaturated fatty acids such as EPA, DHA and the like, vitamins and trace elements and the like, and are suitable for all crowds.